Marble hole drill bit made of high quality marble diamond powder plating, and specifications 6mm-120mm

Features:

1. the opening neat smooth without broken edges and does not produce tremors

2. cut resistance, fast aperture speed, chip easily

3. package for Marble Granite glass openings

Note:

Should pay attention to when using slower speeds (around 800-1000 revolutions per minute ), want to keep water cool, (you do not need too much, but to keep adding water) dry drilling is prohibited, high temperature friction, seriously affect the results!