PVC Water Supply Pipe BSP Threaded Fittings Adapter Joint 1/2"- 4" BSP- 4Color

0.4-3mm Diamond Coated Tipped Drill Bit for Tile Jewellery Glass Pack of 2 -1000 

Shank diameter: 2.35MM

Total length: 41-45MM

Head diameter: 0.4-3.0MM

Suitable machine: Drill/Hanger Grinder

Application scope: Jade, metal, agate, jadeite, gemstone, pearl, pendant, pebble can be used (the material hardness is different from each other).

 Please note that 

1. Water-cooled.

2. High speed (more than 20,000 rpm).

3. Stable, do not shake, with hanging mill, table mill, speed control small table drill (with a table drill).

4. Light pressure.