In 2002, after 42 years of uninterrupted activity in Torino, MG was relocated in Lebanon and Today it is the biggest diamond tools manufacturer in the Middle east. In 2013 , Mg built a new factory for the production of Diamond wire with a capacity of 30,000 beads per day.

MG was established in 1960 by Eng. Gustavo Fiore in Turin Italia, cradle town of the Italian Industrial Revolution, MG was the 1st Italian company and 3rd European company to venture in the field of Diamond Tools Manufacturing leading the company to worldwide reputation. Since 1960, MG has set up a Laboratory of Research & Development that enabled MG to be permanently in the leadership in the field of Powder metallurgy. In 1981, the Italian National council of Research & Development has quoted MG Laboratory of Research among the outstanding ones. By Law Decree dated 23/11/1988 has been certified as “ Highly Qualified “ & included in the restricted Album of certified Laboratory of Research. In 2002, after 42 years of uninterrupted activity in Torino, MG was relocated in Lebanon and Today it is the biggest diamond tools manufacturer in the Middle east. In 2013 , Mg built a new factory for the production of Diamond wire with a capacity of 30,000 beads per day.

*Note that most standard drill bits can be used in automated machinery (with the proper adapter) and most boring machine bits can be used in a portable drill or drill press (assuming the chuck is big enough). We have only organized them in this fashion to make selection easier.

Flute Styles: Most twist drills have flutes to evacuate the chips at an unspecified angle, and are suitable for the majority of applications. Some specialty twist drills may be designated as "High Helix", "Fast Spiral" or "Low Helix", "Slow Spiral" for specific applications requiring higher or lower spindle speeds or feed rates.

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Tip Styles: The cutting tip of a flat bottom boring drill consists of one or more flat blades extending from the center to the outer edge. Flat bottom boring bits are available with or without spurs (teeth) at the outer diameter of the bit. Bits with spurs on the outer edge prevent chipping and splintering on wood or laminated surfaces. Some flat bottom boring bits also include a center spur to keep the bit from walking during the initial cut - Spade bits are a good example.

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Since 1960, MG has set up a Laboratory of Research & Development that enabled MG to be permanently in the leadership in the field of Powder metallurgy. In 1981, the Italian National council of Research & Development has quoted MG Laboratory of Research among the outstanding ones. By Law Decree dated 23/11/1988 has been certified as “ Highly Qualified “ & included in the restricted Album of certified Laboratory of Research. In 2002, after 42 years of uninterrupted activity in Torino, MG was relocated in Lebanon and Today it is the biggest diamond tools manufacturer in the Middle east. In 2013 , Mg built a new factory for the production of Diamond wire with a capacity of 30,000 beads per day.

Shank Styles: Twist drill bits designed for use in automated machinery have fixed diameter (usually 1/2" or 10mm) shanks, threaded shanks, or specialty shanks designed for certain machines. General purpose twist drills for use in portable drills have shanks the same diameter as the bit size (up to a certain diameter), larger diameter bits incorporate a reduced shank (either 1/4", 3/8" or 1/2") to fit into a standard drill chuck. Some bits have 3 flats on the shank to prevent spinning under high torque loads. Others have 1/4" hex shanks for use in a portable drill with a hex bit holder.

Flute Styles: Large flat bottom boring bits do not have flutes, they consist of only the cutting surface and the chips remain in the hole until the bit is removed.

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Size Designations: Common twist drills for use in portable drills, etc. are available in fractional inch, wire sizes, letter sizes, and metric decimal millimeter. Twist drills for use in automated machinery are only available in fractional inch and decimal millimeter. See our Drill Bit Size Chart for the breakdown of fractional, letter, and wire sizes.

Shank Styles: Counterbores for use in hand-held drills typically clamp on to a standard twist drill and therefore have a straight shank the same diameter as the center drill. Counterbores for use in automated machinery have fixed diameter (usually 1/2" or 10mm) shanks, threaded shanks, or specialty shanks designed for certain machines.

In 1981, the Italian National council of Research & Development has quoted MG Laboratory of Research among the outstanding ones. By Law Decree dated 23/11/1988 has been certified as “ Highly Qualified “ & included in the restricted Album of certified Laboratory of Research. In 2002, after 42 years of uninterrupted activity in Torino, MG was relocated in Lebanon and Today it is the biggest diamond tools manufacturer in the Middle east. In 2013 , Mg built a new factory for the production of Diamond wire with a capacity of 30,000 beads per day.

General Description: Counterbore drill bits create a flat bottom blind hole with a smaller diameter center hole that penetrates through the material. The purpose of a counterbore is usually to conceal the fastener head (by covering the hole) or provide a recess to prevent the fastener from protruding above the surface of the material being drilled. Counterbores on our site are designed for use in wood or plastics and are not intended for counterboring steel.

General Description: Twist drill bits are the most common type of drill bit and are used for everyday drilling in all types of material. They are also the most confusing due to the sheer number of size, tip, and material specifications.

Tip Styles: The cutting tip of a countersink drill consists of two or more flat blades extending from the center drill to the outer edge. Countersinks are made with angles from 60 to 120 degrees but those on our site are typically 82 or 90 degrees. For wood use many times the manufacturer does not specify the angle.

Shank Styles: Countersinks for use in hand-held drills typically clamp on to a standard twist drill and therefore have a straight shank the same diameter as the center drill (some have 1/4" hex shanks for hand use in a bit holding screwdriver). Countersinks for use in automated machinery have fixed diameter (usually 1/2" or 10mm) shanks, threaded shanks, or specialty shanks designed for certain types of machines.

General Description: Specialty drill bits are any bit that doesn't fall into one of the four categories above. These bits include:

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Our product line includes: Diamond circular saw blades. Diamond gangsaw blades. Diamond wire for quarry. Diamond wire for mono wire machines. Diamond wire for multi wire machines. Diamond fickert for granite polishing. Diamond rollers. Diamond Frankfurt for marble polishing. Diamond brush for leather touch. Special diamond tools according to customer drawing. All our diamond tools are produced with the most advanced technology using the highest quality components.

With dozens of drill bit types and thousands of sizes to choose from we'll explain the differences and help you choose the right drill bit for your application.

Length Designations: The length of a twist drill has much to do with its rigidity - a shorter bit will be stronger and less likely to wander or break but may not have the reach needed for all jobs. Twist drill bits for use in automated machinery have an actual length specification (e.g. 4-1/2") while most (not all) twist drills for use in portable drills are graduated length and use a name to specify the length range:

Drill bits are generally classified as Twist Drill, Counterbore, Countersink, Flat Bottom Boring, and Specialty. On our web site we have divided these into two categories:

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Flute Styles: Some countersinks do not have flutes (except for the center drill) and simply shave away the material, others are designed similar to a twist drill with a replaceable center drill.

Tip Styles: The cutting tip of a counterbore drill consists of one or more flat blades extending from the center drill to the outer edge. Counterbores are available with or without spurs (teeth) at the outer diameter of the bit. Counterbores with spurs on the outer edge prevent chipping and splintering on wood or laminated surfaces.

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Flute Styles: Some counterbores do not have flutes (except for the center drill) and simply shave away the material, others are designed similar to a twist drill with no tip angle and a replaceable center drill.

Coatings: General purpose drill bits are available with black oxide, bronze oxide, a combination of black and bronze oxide, and TiN coatings. Twist drills for automated machinery on our site are primarily for use in wood or plastics and are not coated.

Shank Styles: Most large flat bottom boring bits have a fixed size hexagonal shank. The hex shank prevents the bit from spinning in the chuck under excessive loads.

General Description: Countersink drill bits create a tapered surface hole with a smaller center hole that penetrates through the material (some are available without a center drill for countersinking existing holes). The purpose of a countersink is to allow a tapered head fastener to sit flush with the surface of the material. Countersinks on our site are designed for use in wood or plastics and are not intended for counterboring steel.

General Description: Flat bottom boring bits are similar to counterbores but do not include a center drill. These bits are designed to drill flat bottom blind holes for European style hinges, etc. Flat bottom boring bits are also used for drilling large diameter thru-holes without the plug that is typical when using a hole saw. These thru-hole bits are used for locks, door knobs, wiring holes, etc. Flat bottom boring bits on our site are designed for use in wood or plastics and are not intended for use in steel.

Materials: General purpose twist drills for use in portable drills are available in different grades of high speed steel as well as cobalt steel and solid carbide. Twist drill bits for automated machinery are available in carbon steel, high speed steel, carbide tipped, and solid carbide.