Harder materials require slower running speeds
Running below the optimum speed will cause chipping
stainless steel
Use on medium to hard materials
Compact format with contoured comfort grip
12mm Diamond Hex Shank Core Drill Harder materials require slower running12mm 1 4" Hex Shank Diamond Core Drill Brilliant Diamond Vacuum Brazed Core Drill. Vacuum brazed, self lubricating, wax filled diamond core drills. One piece hex shank. Suitable for drilling tiles, ceramics, vitrified products, porcelain, natural and composite engineered stone, monocottura, fibreglass, graphite, carbon fibre, FRP's, and other highly abrasive materials. The wax filled core lubricates the cutting edge allowing dry, water free, drilling.