GoYonder Dry/Wet Diamond Core Drill Bits/Hole Saws for Drilling Granite/Marble/Concrete/Stone (1-3/8");

5/8mm''-11/ L104mm
Premium diamond stone dry core bit

Our diamond stond dry core bit fit on a high-speed angle grinder.
It provides the best cutting performance and can drill through the toughest 1-3/8" granite or engineered stone countertop at the job site without using water.
Not only is this convenient but it also increases productivity by cutting down on the amount of clean up needed when using water.


1.High frenquency/Laser welded available;

2.Idea for drilling the faucet mounting holes in stone countertop,plumbing lines in showers,and vanities;

3.Special bond provides long life and aggressive drilling speed;

4.Vacuum Brazed side protection offers clean cut & steel core protection.

5.Use wet or dry drilling for stone, wet using will greatly prolong the segment life.