These Diamond Bits are Capable of Drilling into.
Extremely Hard Materials Such as Marble, Slate, Glass, Tile, Stone.
The material needs only water for lubrication
Can be used with standard electric drill
Always use lubricant (water) or driller will burn
Align the place to be drilled, make a circular trace, then drill.
Please allow 1-3cm differs due to manual measurement.
Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.