1.Internal Sealing Wax Treatment, Cutting Cooling Can Be Dry Playing, the Use of a More Durable
2.Hexagonal Shank Design at the End of Hole Opener.
Suitable for Electric Drills, Table Drills
3.The Shank Comes with a Quick Connecting Rod for a Wide Range of Applications Can Be Added Telescopic Joints.

● Widely Applicable:

1.Multiple Size Dry Diamond Drill Set Can Be Used For Drilling And Cleaning Of Hard Materials, Especially Suitable For Tiles, Porcelain, Granite, Ceramics, Marble, Bricks, Etc. Note: Not Suitable For Wood And Tempered Glass.