HIGHDRIL Dry Diamond Core Drill Bit - 35mm Concrete Granite Marble Glass Porcelain Tile Masonry Brick

Diameter 35mm 1-3/8"",diamond length 10mm,total length 65mm,Triangle shank.. Vacuum dry/wet brazed diamond drilling bits Core bits with triangle shank.. Can be used without water,Dry or wet drilling.. Triangle shank design can be gripped tightly that won't slip out easily,used in 10mm (3/8 in) Hand Drill, Bench Drill.. Multi-purpose drilling for granite & marble,masonry,concrete,tile/ceramic,stone,etc.