2Pcs 20mm 3/4 inch Diamond Hole Saws Granite Drill Bits Masonry T...

2Pcs 20mm 3/4" inch Diamond Hole Saws Granite Drill Bits Masonry Tools for Stone

• Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit, Small glass drill bit
• Outside Diameter:20mm(3/4"); Internal diameter:17mm; 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