DT DIATOOL Diamond Core Drill Bit 50mm, Hole Saw with Triangle Shank for Porcelain Tile Ceramic Marble Granite

Specification: total length 65mm; diamond height 10mm; Workable length 30mm; Diamond Grit: #40/45. Wide application: Dry or wet drilling holes in porcelain tile, ceramic tile, marble or granite, etc. Serrated cutter tooth design: Greatly improve the sharpness and drilling speed, there are several chip removal grooves between the teeth, in the drilling can be quickly discharged from the dust, not easy to be clogged. Machine: Hand drill with no less than 2000RPM. The higher the rpm the longer the life, the lower the rpm the shorter the life. Vacuum brazing technology: The diamonds are more firmly fixed and more exposed, which prolongs the life and makes drilling more neatly and sharply, faster and with better finishes.