Diamond Core Drill Bits Set 10 Pack DT DIATOOL 6/6/8/25/35/50/68mm Tile Bits+10mm Milling Bit+50mm Chamfer Bit+Hex Adapter for Porcelain Ceramic Marble Granite

【Specification】Package Contains 7 pieces core drill bits(6/6/8/25/35/50/68mm) and 1pc diamond milling bit (10mm) and 1pc diamond chamfer bit (50mm) and 1pc hex adapter, in an Oxford bag, totally 10pcs. 【Application】Core drill bits are used to drilling holes; diamond milling (finger) bit for enlarging holes; diamond chamfer bit for trimming or beveling holes; Hex adapter makes your M14 thread drill bits mounted on the hand drill. Dry or wet use. For porcelain ceramic tile marble granite, etc. 【Recommended Machine】M14 thread angle grinder. Recommended speed 6000RPM; Maximum speed 11000RPM. Hex adapter in this kit can be attached to a drill bit with a M14 fitting so that the drill bit can be attached to your hand drill. If you are using this kit on a hand drill, make sure that the drilling speed does not go below 2000 RPM and do not use the impact drill mode. 【Durable and Sturdy】Vacuum Brazed technology provides high efficient working performance and longer service life. 【Save time tool】High quality diamond make drilling less chipping; Drill bits, chamfer bit and finger bit are used together for faster hole shaping and a clean finish.