30Pcs 0.4-2.5mm Micro Lapidary Diamond Drill Bits Carving Burrs Tools for Stone

Description

JINGLING 30Pcs Diamond Coated Hole Saw Drill Solid Bits Cylindrical Head Grinding Bit Lapidary Carving Tools for Jewelry Gems Glass Code 4A/5A/6A/8A/10A/12A/15A/18A/20A/25A-30Pcs
Description:
P
roduct Name: Lapidary Diamond Drill Bits, Diamond Drill Bits for Stone Jewelry
Tip Shape: Cylindrical Head Tip
Head Diameter : 0.4mm/ 0.5mm/ 0.6mm/ 0.8mm/ 1mm/ 1.2mm/ 1.5mm/ 1.8mm/2mm/ 2.5mm
(
Please select the Head Diameter which you need)
Total length : 42mm ( 1-21/32")
Drilling depth: 3-6mm depth
Shank diameter: 2.35mm ( 3/32")
Material: Metal, Diamond
Quantity:  30Pcs
The speed of 5000-50000 r/min
Can be installed on the electronic grinder, hanging mill and hand electric drill (not included here).
Suitable for use in drill hole on Jewelry, Gems, glass, marble, tile or granite.
Used for drill hole, sculpturing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many other abrasive materials.
Use with water as a lubricant
Note: carving must use cold water to cool the workpiece and the grinding head polishing, moment also can't do without water
Never use drills while machine is in hammer action
Drill depth is 3-6 mm depth
If you attempt to drill through materials that are thicker than 6mm, we suggest that double sided drill through. Drill the stone on one side first step, and then turn over stone to another side to finish drilling through.
We will send out your order within 1-2 days after payment has been received and cleared.
Please let us know if you are looking for other accessories or hardware.