Drill bits are made from different grades of raw steel which are delivered to manufacturing plants. The steel goes through a process of cutting and heat treatment at extremely high temperatures, to harden the steel. The bits are then cleaned, tempered, grounded, fluted and pointed. Specialist drill bits go through additional processes such as split pointing.

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For more specific guidance on what size of drill bit to use, refer to pilot hole charts for the particular bits and material you’re using.

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Not sure of the country or the administrative division to choose? Or your country/region is missing in the list? Try entering the address into the search at the top of the page to lookup the right code to use. Also available, try using our country map to find your needed zip/postal code.

These drill bits are not as robust as cobalt drill bits and you cannot sharpen them without the risk of removing some of the coating.

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Drill bits are very good value for money. General purpose drill bits are the lowest price. For example, a pack of 10 HSS Roll Forged Drill Bits starts from £1.16 (inc VAT). Specialist drill bits such as multi-cut stepped bits can be more expensive. Generally, the longer and wider the drill bit, the more expensive it will be.

It is important to make sure that you use the correct type of drill bit to match the material you are drilling into. When choosing which drill bit to buy or use, consider its material, its strength and cutting power.

American Steven A. Morse, from Massachusetts, invented the twist drill bit in 1861. Before his invention, drilling was a slow and laborious process because drill bits were made from a pointed, sharp, flat piece of metal which overheated too quickly. He wanted to develop a more effective way to drill a hole and gained a US patent for a twist drill in 1863.

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The concept of a drill bit is thousands of years old, but the modern twist drill bit that we are most familiar with was invented around 160 years ago.

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In terms of length, use a drill bit which is as long as the screw or object to be inserted. For example, a 40mm screw would need a drill bit that has a flute length of at least 40mm.

Drill bits are metal cutting tools used with drills to create holes in many different types of materials. The most common types of drill bits are designed with helix flutes and a cutting point, and are powered to cut holes by rotation and torque from a drill.

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Black oxide is the most basic coating used on drill bits to provide resistance to heat, lubrication and slow down oxidation to the metal. It helps extend the life of particular drill bits, but it doesn’t provide any additional strength.

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We sell a wide variety of drill bits, including individual and drill bit sets for wood, metal and plastic, masonry, HSS, cone/multi-step and more. Take a look at our extensive range.

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Drill bits are used to drill small to large holes in stone, granite, marble, concrete, brick, plaster, plastic, steel, wood, composites, ceramic tiles, glass and much more.

Both cobalt and titanium drill bits are used to make holes in hard, tough materials like metal. Cobalt drill bits are the toughest you can get, and have no coating, unlike titanium drill bits.

Drill bits are among the most common and essential accessories used in construction and DIY projects. There are thousands of different types, sizes and applications for drill bits.