2Pcs 23 mm Diamond Hole Saws Granite Drill Bit Coated Masonry Tools for Stone - Product Features
- Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit, Small glass drill bit
- Outside Diameter:23mm; Internal diameter:20mm; Shank Diameter: 8mm; Drilling depth:29mm
- Easy to use, excellent for making clean and accurate hole on stone, granite, marble, tile
- Standard 8mm shank that will fit cordless screwdrivers, drills or use in standard drill chuck
- Add water for coolant, start drill at 45 Degree to surface and align to 90 Degree as hole forms