Diamond Core Drill Bits Set SANLEETEK 11pcs Hole Saw Kit (6/6/8/20/35/50/68/110mm+20mm Finger Bit+50mm Beveling Chamfer Bit+Hex Adapter) for Tile Porcelain Ceramic Marble Granite with M14 Thread

【Specification】11pcs in total: 8pcs 6/6/8/20/35/50/68/110mm Drill Bits+1pc 20mm Finger Bit+1pc 50mm Beveling Chamfer Bit+1pc Hex Shank Adapter 【Application】Widely use for dry and wet drilling/beveling/enlarging/shaping holes in ceramic tile porcelain marble granite, quartz, etc 【High Performance】Vacuum Brazed technology provides high efficient working performance, faster drilling speed and longer service life. High-quality diamonds provide high-strength work support, increasing drilling efficiency and wear resistance 【Unique Detail】The inside of 6-10mm drill bits are filled with cooling wax, keep the bits cool and lubricated for dry drilling. The design of lightning teeth shape above 20mm is sharper, facilitating debris discharge and heat dissipation 【Recommended Machine】Suitable for M14 thread angle grinder. Recommended speed 6000RPM, maximum speed 11000RPM (Diameter>100mm, Recommended speed 3000RPM, maximum speed 6000RPM). If you want to use electric drill or other machine, you can use Adapter in the package. Minimum RPM: 2000; Faster the RPM, Longer the Working Life