JINGLING 13mm 1/2" Diamond Hole Saw Drill Bit Coated Masonry Tools for Rocks Stone Glass
- Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit, Drill bits for rocks.
- Excellent for making clean and accurate hole on stone, granite, marble, tile, glass.
- Please add water for coolant and drill slowly.
- Holes require no ruther work as cutting is clean.
- NOT have center pilot drill, 5/16 inch hex shank will fit handheld or upright drillers.