The bits feature SDS-plus shanks, and users will need a hammer drill to use them. The set comes with seven bits, ranging in size from 3/16 inch to 1/2 inch in diameter, making this a highly versatile set of masonry bits.

The level of detail covered by the responses was extremely impressive, and in some cases added relevant caveats that could help with more nuanced responses. But often, the useful answer to the question was either buried alongside explanations around the broader differences between UA and GA4, or missing altogether. While GPT 4 could make a convincing politician, such responses wouldn’t be useful for data analysts looking for a new way of operating Google Analytics, and could be more time-consuming.

Masonry drill bits are specifically designed to tackle stone and can bore through these hard surfaces with ease. Often featuring tungsten carbide tips that can endure drilling through hard stone surfaces, masonry drill bits have wide flutes that allow them to pull away large amounts of material as they drill to prevent debris from jamming the bit. Some bits even use diamond-encrusted blades to cut through this material. They come in a wide range of sizes to suit different needs.

For most standard bits, you don’t need to use water. However, if you’re using a large hole bit, spraying the surface of the concrete with water can reduce friction and help keep the bit cool as you drill.

However, one in three responses were still ‘semi-correct’ or incorrect, showing that we are still nowhere near to ChatGPT becoming a reliable member of data marketing teams. Many of the answers that were wrong previously have been improved but are still not fully correct, or are factually correct but lacking in key points that could lead a user to have an incomplete understanding of the topic. For example, when asked about the role of different attribution capabilities in GA4, GPT 4 gave a detailed and correct account of how data-driven attribution could be used for extensive analysis, but failed to mention that users can still choose to use a last click attribution method. In some cases, the latest iteration of ChatGPT also gave a perfect answer to a question, but added unnecessary information that is misleading.

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A durable hard-plastic carrying case keeps the bits organized and easy to transport to the worksite. It was one of the better cases we saw, as it held the bits securely and came with a sliding lock. This is an all-around great little set of drill bits for anyone who regularly needs to drill into concrete or other masonry materials.

In addition to drilling through masonry, we tried out this set of bits on dimensional lumber and 8-gauge sheet metal. They were slightly slower on masonry than some of the dedicated bits we tried, but they still did the job. They excelled as drill bits for metal as long as we drilled nice and slow. It’s not every day you can pick up a set of good metal drill bits and use them to drill a hole in brick or concrete, but it’s possible with the EZArc bits.

In actual testing, we drilled through concrete, stone, and brick to see how well the drill bits fared. We used a standard DeWalt drill and a Milwaukee rotary hammer drill (depending on the individual drill bit shanks), and we drilled dozens of holes. We noted how well the bits performed and awarded points based on a rubric. After testing, we averaged the points to determine our best overall pick, and then we categorized the rest of the drill bits by their best usage.

This set comes with five bits, ranging in size from 3/16 inch to 1/2 inch. An included plastic bit case provides convenient storage.

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A durable hard-plastic storage case keeps the bits organized and protected when in a tool box or on the workbench. Thanks to the visual holes in the holder that show the exact size hole each bit will drill, we found it easy to pick the correct-size bit at a glance. If you regularly drill into any type of masonry, you won’t go wrong with this set.

To cover all bases, we tested bits that fit standard drills and impact drivers, as well as rotary hammer drills. We also tested a hole bit that fits a grinder. Ahead, learn which factors to consider when shopping for a cement drill bit, and find out how the following products earned a spot in our lineup of the best drill bits for concrete.

Our favorite, thanks to its four-flute design and carbide tips, is the five-piece Bosch Bulldog Carbide Set for use in hammer drills, which are often used as masonry drills.

Glenda Taylor is a BobVila.com staff writer with a background in the residential remodeling, home building, and home improvement industries. She started writing for BobVila.com in 2016 and covers a range of topics, including construction methods, code compliance, tool use, and the latest news in the housing and real estate industries.

Repeated drilling through dense concrete and stone puts drill bits to the test, often wearing them down quickly. While these drill bits from Makita are more expensive than some masonry drill bit sets, in our tests, their thick tungsten carbide tips held up well for drilling several holes.

Most masonry drill bits are used in hammer drills or standard drills, but not all. The SHDIATool core bit is designed for use with an angle grinder, and we were impressed at how well it drilled.

For drilling jobs that require drilling through concrete or other stone surfaces, it’s important to use a drill bit that’s strong and sharp enough to bore through especially hard, dense material. Read on to learn about materials, bit type, drill compatibility, and other crucial factors to consider when choosing a masonry drill bit.

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When running questions through the model, it became clear that GPT 4 gave significantly longer responses than its predecessor. GPT 3 gave responses of 165 words on average, whilst GPT 4 gave responses of 443 words on average. The new model gives an extremely robust answer every time, going into a lot of detail and often bringing in unrelated aspects. It was certainly clear that the new training data and generally improved model allowed Chat GPT to navigate the various nuances of GA4 in order to give plenty of guidance to users on how to get started. However, was the guidance more reliable than that given by the previous model?

While generative AI models are continually improving, there is still a limit to what the models can achieve by themselves. But what these models lack in infallibility, they compensate with speed, scale, and cost-effectiveness, which is why the industry is already seeing Gen AI being used in lower risk use cases, such as virtual assistants, or in controlled, low-stakes automation processes.

Each bit has a wide spiral flute that bores evenly through stone, concrete, and brick. These bits will easily handle tough concrete-drilling jobs, but you’ll want to use a good drill for concrete—and it will need to be a rotary hammer drill with a minimum 7/8-inch chuck. We drilled several holes in quick succession, and the Makita bits performed flawlessly.

When purchasing and using a drill bit for masonry, there are several important guidelines to follow to ensure a successful outcome.

Last year, fifty-five ran an analysis on how ChatGPT responded when we asked the model a list of common questions our consultants are asked about Google Analytics 4. At the time, it could only answer a third of questions to an acceptable standard, getting responses entirely wrong in 50% of cases, with the most common reason being that GPT 3 was using out-of-date information to provide its responses.

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This is the second set of Bosch drill bits to make our lineup, and we found these bits highly efficient. Their four-flute design excelled at ejecting dust and debris as we drilled, which made the drilling process smooth and quick. Their pointed tips kept the bits centered as we started the holes. We were able to drill clean holes in concrete, brick, and even dense stone without problems.

You can drill as soon as the concrete is completely hardened, but pros often wait a couple of days to ensure the concrete is ready. Unlike needing to wait before painting or applying a sealer, you don’t have to wait 28 days to drill.

Before selecting the concrete drill bit sets we wanted to test, we researched more than 20 sets, looking for high-quality bits made from steel with carbide tips. We considered brand to an extent—after all, manufacturers like Bosch and Makita have top reputations for producing high-end power tools and accessories. Still, we didn’t automatically eliminate smaller or niche manufacturers if their masonry drill bit sets were highly rated by customers.

The responses from the GPT 4 model were much more likely to be correct. Whilst only 30% of answers were correct in the previous study, the success rate from the new model was more than double, with 66% of answers being correct. Many of the questions answered wrongly due to out of date training data were resolved, and the new model also corrected factually incorrect statements, such as GA4’s capability to backfill data before the first date of tracking, and a capability to ‘automatically measure conversions through machine learning’.

The new model is far from infallible. The model failed to include the nuance that GA4 360 properties would be processing data up until July 2024, which in addition to the assertion that 14 months is the maximum data retention setting, suggests that GPT 4 doesn’t fully grasp the difference between standard and 360 properties. GPT 4 also offered some misinformation around GA4’s data processing, suggesting page view hits were measured differently in UA and GA4, and that improved cross-device tracking could be a plausible reason for purchase event differences between the two platforms.

The SHDIATool core bit excelled in our tests. To extend its useful life, users can spray the surface of the material they’re drilling with water, which will help keep the bit cool and reduce friction. This is the bit to have for drilling larger holes in concrete.

Masonry drill bits come in several variations, including rotary percussion, double flute, and saw drill bits. All bit types use large carbide tips that can penetrate stone. Some bits have spear-shaped tips that allow for precision drilling, while others feature a crown-shaped tip that can efficiently grind through masonry.

ChatGPT continues to be a phenomenon of modern technology. Since it exploded onto the scene overnight acquiring one million users in just five days, it has grown continuously, generating 1.63 million visits in February 2024. Many businesses are still trying to assess how they may be able to use it to streamline operations, generate marketing outputs and source information, balancing the benefits against the risks it poses. But how does it fare when it comes to data and analytics? Can it be trusted?

If you have additional questions about how to drill into concrete or choosing a drill bit for concrete or a drill bit for brick, you’ll find answers here.

The following drill bits are well suited for drilling into concrete and other masonry materials. They withstood rigorous hands-on testing, and each set of bits performed well enough to make our list. You’ll find different sizes and types that fit different drills. There’s sure to be one for your concrete-drilling project.

With extra-wide U-shaped flutes, these drill bits from WorkPro effectively ejected masonry dust as we drilled in concrete, brick, and stone. The bits have Luxembourg carbide tips that are made to be tough, hard, and durable, and they drilled quickly in our tests.

This kit includes eight bits, ranging from 1/4 inch to 1/2 inch in diameter. The bits have SDS-plus shanks, so the user will need a rotary hammer drill to use them.

These are slotted drive shaft (SDS) bits, meaning they will fit SDS-plus hammer drills, so we used a cordless Milwaukee rotary hammer drill for testing. This set has five pieces, including a 3/16-inch, 3/8-inch, and 1/2-inch bit and two 2¼-inch bits of different lengths. The carbide tips are rugged, and we could easily drill through concrete, brick, and stone.

Drilling through masonry can be tough, requiring special drill bits for concrete that will hold up to the job. We recently tested seven different types of concrete drill bits in various sizes—using them to drill holes in concrete, brick, and stone.

Sharpening drill bits manually with a file or bench grinder is a complicated process. You need a machine specially designed for drill-bit sharpening to do it yourself. It’s usually easier to buy new drill bits.

The Owl Tools bits have standard smooth shanks to fit a regular drill. We didn’t notice any of the bits slipping as we applied pressure while drilling, as some smooth-shank bits tend to do.

Spending money on specialty concrete bits that see infrequent use may not be the most economical way of expanding one’s collection of drill bits. This EZArc multipurpose bit set offers an excellent alternative. The bits’ design and carbide tips make them suitable for drilling through tile, concrete, and stone plus metal, wood, and even plastic.

We liked the pointed tips on this set of bits as they kept the bit from skittering across the material when we started drilling, which made the process much easier. If you need to drill different size holes in masonry, these Bosch Bulldog bits are just the ticket.

When buying any type of drill bit, it’s important to consider its compatibility with the drill. Not all drill bits fit all drills. A 1/2-inch-size drill will fit drill bits with a shank up to 1/2 inch in diameter, while a 3/8-inch-size drill will only fit drill bits with shanks up to 3/8 inch in diameter.

While there is no single chuck or drill head for concrete bits, many concrete bits have a slotted drive system (SDS), which means they have slots on the ends of the shanks for use in rotary hammer drills. SDS bits came out decades ago, and today, an improved version (SDS-plus) is standard on bits for hammer drills. You can still find smooth-shank bits for standard drills and hex-shank bits that will fit standard drills and impact drivers.

In addition to carbide tips, the EZArc bits have multigrind sharp edges and double-flute design, which make them well suited for drilling in various materials. A hex shank adds even more versatility—these bits are compatible with standard drills and impact drivers. The kit includes five bits: 5/32 inch, 3/16 inch, 1/4 inch, 5/16 inch, and 3/8 inch.

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With carbide tips and a fluted design that bores through masonry, these Bosch Bulldog drill bits are some of the best on the market. Their four-flute design brought concrete dust up and out of the holes as we drilled, making the process smooth and quick.

Like higher-end bits, this set of Owl Tools bits comes with pointed tips to help keep the bit positioned when starting the hole. We tested the bits by drilling into brick, concrete, and stone, and they fared well. We felt they were just slightly slower than some of the other bits we tested, but drilling into masonry isn’t something to hurry along. We mainly wanted to see if they could withstand repeated drilling without breaking, and they did.

Since then, a lot has moved on in the generative AI space. Google entered the game with Bard, setting up Gemini to compete with OpenAI’s explosively popular chatbot, and more recently, Anthropic’s model Claude has been making waves in the industry. It had become critical for Open AI to update its model to keep up with the competition, so when Open AI finally launched its upgraded model—GPT 4—which remains available only in ChatGPT Plus—we wondered how this would affect its accuracy.

Some drill bits have coatings to improve their performance. Black oxide coatings are more durable than high-speed steel, as they resist rust and corrosion. Tungsten carbide coatings enhance the drill bit’s strength, enabling it to bore through stone and concrete.

Glenda Taylor is a product tester and writer specializing in the construction, remodeling, and real estate industries. She and her husband own a general contracting company, and Taylor is experienced in both residential and commercial building applications. She tests a wide range of power tools as well as other home improvement, household, and lawn-and-garden products.

Start by drilling a small guide hole at a low-speed setting for very hard concrete. Once you’ve established a 1/8-inch hole, remove the bit, blow the dust out of the hole, and use a larger bit at medium speed while applying steady pressure. It’s also a good idea to wear hearing protection—concrete drilling can be loud.

This set from Owl Tools includes 10 drill bits at an affordable price point. With its broad range of sizes, this set can handle most concrete drilling needs; bit sizes range from 1/8 inch to 1/2 inch in diameter, and we found them all to be durable and of good quality.

A year on from a rather disappointing test, can a reinvigorated ChatGPT win back credentials as an analytics tool—and can we trust it with our data?

Masonry drill bits come in a variety of sizes to suit a broad range of needs. The smallest masonry bits are around 3/16 inch in diameter, with larger bits topping out at the 1/2-inch size. Hole saw bits have sizes that go up to 4 inches or more.

Given the right parameters, and with some course correction processes in place, our experience has shown that human intervention on top of this powerful new technology results in a formidable force. As tangible use cases arise where GenAI can change the game, the ability of a system to monitor pain points and generate ever-improving results will separate the businesses simply using Generative AI from those who are truly using it to its full potential.

One can reduce the length of its answer by prompting the model—if you know what you are doing. When re-running the study on a subset of questions, we found that the word count reduced back down to 123 words on average, with no impact on the accuracy of responses. This example of ‘prompt engineering’ shows how using Generative AI techniques in projects can start to add real value.

We tried out a 1-inch hole bit, although these bits are available in several sizes to suit your specific needs from just under 3/4 inch to 4 inches in diameter. This is a diamond-coated drill bit; tiny diamond shards are laser welded to the tip, making it easy to drill through concrete and other types of masonry.

Masonry drill bits need to be hard enough to endure the rigors of drilling through concrete. With that in mind, most masonry drill bits have steel shafts with a cutting tip made of tungsten carbide, which is much harder than steel and can grind through stone without dulling quickly. Some drill bits use diamond particles, which are welded to the cutting edge to chew through hard surfaces such as marble and granite.