BQLZR 0.5mm Diamond Coated Lapidary Drill Bit Hole Tool Solid Bits

Note: The color of the item may vary slightly due to photography and your own computer
Feature:
1.This diamond coated core drill bit removes a complete circle from tile, marble, granite, ceramic or other materials and only needs water for lubrication. Scope of application: jade agate, emerald pearl shell, drill bit, crystal lettering, carving grinding head.
2.Excellent for making neat and accurate hole tile and marble.
3.Start your hole diagonally, make a round trace and then hold drill straight.Add water for coolant and drill slowly.

Specification:
Material:Metal,Diamond
Color:Silver
Shank Diameter: 2.35mm/0.09inch
Head Diameter: 0.5mm
Sand length: 6-8mm/0.24-0.31inch
Full length: 40mm/1.57inch
Dimension:2.3x42mm/0.09 x 1.65inch(Dia x L)
Weight:25g

Note: Generally, the punching tools needs to be slowly imported when starting to punch, and then punched hard. Harder stones like ice, rocks, or agate. The punch pin may not be. In this case, we recommend adding emulsified oil to the water to achieve a more lubricating effect.
Instructions:It must be cooled with water. If dry drilling is performed, the diamond on the tool head will be graphitized due to overheating, which will quickly wear. Light pressure feed, diamond tools rely on grinding to process the workpiece, excessive force, grinding powder is not easy to eliminate , tools (especially small tools) are also easily damaged.