HIGHDRIL Diamond Core Drill Bits,1-3/8 Inch 35mm with 5/8-11 Thread,Dry Hole Saw with Side Protection for Coring or Making Holes in Granite,Marble,Hard Stone - HD001035203

• Diameter 1-3/8inch/35mm,diamond height 10mm The Diamonds are located on the inside and outside of the core bits barrel that reduces friction, which in turn results in lower heat and less drag. The reduced heat allows the hole saw to preform at higher RPMS without decreasing the life of the bit. The Cutting Depth for the Dry Diamond Core Bit is approximately 3inches（75mm） Ideal for Granite and engineered stone applications, and can be used on Hand Grinder,Angle Grinder with a Standard 5/8"-11 thread,if drills please use adaptors available Dry core bit is designed to easily go through granite, quartzite, and engineered stone.Diamond Drilling Bit have holes on the side to allow heat to escape, keeping the bit cool and working hard