Set of 20 diamond-coated twist drill bits, 0.8 mm, for glass, jewelry, stone, and tile.

[Application] - Suitable for drilling small holes in glass, metal, shells, jade, marble, stone, drywall, and wire. Due to the varying hardness of the material, the effect will also vary.
Size: 0.8mm twist drill bit.
Material: Diamond-coated high-speed steel (HSS) manufactured using spiral technology, offering both toughness and hardness, and is not easily broken. The drill bit is easy to chip.
Applicable Machine: Widely used in rotary tools such as hand drills, drill presses, flexible shafts, bench drills, and overhead milling cutters.
Note: When drilling, it is necessary to add cutting fluid in a timely manner for lubrication and cooling. This can achieve a better drilled hole wall, extending the tool life and drilling accuracy.