Drill bit
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A drill bit is a cutting tool used with a drill to remove material and create holes, typically with a circular cross-section. Drill bits are available in various sizes and shapes, designed to produce
From top: Spade, brad point, masonry, and twist drills bits
A set of masonry drills
Titanium nitride coated twist bit
Diamond-coated 2 mm bits, used for drilling materials such as glass
Drill bit sizes
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Drill bits are the cutting tools of drilling machines. They can be made in any size to order, but standards organizations have defined sets of sizes that are produced routinely by drill bit manufactur
Drill bit
…rotational force needed to cut into the workpiece. The drill will grasp the upper end of a bit called the shank in the chuck. Drills come in standardized drill bit sizes. A comprehensive drill bit and tap size chart lists metric and imperial sized drills alongside the required screw tap sizes. There are also certain…
Metric drill set, 1.0–6.0 mm by 0.1 mm, jobber length. The case that holds them in an indexed order (by size), via a graduated series of holes, is called a drill index.
Fractional drill bit set by Craftsman
A #80 drill bit
11⁄32-inch drills: long-series Morse, plain Morse, jobber