Item: 1pc Welded Diamond Drilling Core Bits (Wet) Specification: Diameter: 6MM, 8MM, 10MM, 12MM, 14MM Total length: 75MM (6/8/10) or 100MM (12MM & above), Thread: 5/8-11(Make sure it can be installed on your machine) Application: Drilling hard granite marble all mature stone concrete Feature: SUPREME Grade and Special bond matrix extends drilling life and improve the working efficiency Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities Wet drilling ================THE END================ Other available diameter: 6mm, 8mm, 10mm, 12mm, 14mm, 18mm, 20mm, 25mm, 32mm, 35mm, 38mm, 45mm, 50mm, 58mm, 65mm Note: These products are marked with our brand. If you do not want our brand name, please leave us message, we could send you products without brand. Customize service: If you order 20pcs we could mark your brand name on our products