Diamond Core Drill Bits Set 10-Pack - DT-DIATOOL 6/6/8/20/35/50/68mm Tile Drill Bits+20mm Diamond Milling Bit+50mm Diamond Chamfer Bit+Hex Adapter for Porcelain Tile Ceramic Marble Granite

• 【Specification】Package Contains 7 pieces core drill bits(6/6/8/20/35/50/68mm) and 1pc diamond milling bit (20mm) and 1pc diamond chamfer bit (50mm) and 1pc hex adapter, in a suitcase, 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.

Package Contains 7 pieces core drill bits(6/6/8/20/35/50/68mm) and 1pc diamond milling bit (20mm) and 1pc diamond chamfer bit (50mm) and 1pc hex adapter, in a suitcase, totally 10pcs.