Drill bit
（重定向自Twist drill）
![From top to bottom: Spade, lip and spur (brad point), masonry bit and twist drill bits](/Images/godic/202502/18/Drillbits2059.jpg")
![Drill bit (upper left), mounted on a pistol-grip corded drill.](/Images/godic/202502/18/Pistol-grip_drill.svg2059.png")
![Diamond coated 2mm bits, used for drilling materials such as glass.](/Images/godic/202502/18/2mm_diamond_drill_bits_macro2059.jpg")
![A 5 mm carbide bit displaying shallow point angle.](/Images/godic/202502/18/5mm_carbide_bit_displaying_shallow_point_angle2059.jpg")
Drill bits are cutting tools used to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shape and can create different kinds of holes in many different materials. In order to create holes drill bits are attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.