DT DIATOOL Diamond Drill Bits 5pcs/set Tile Hole Saw for Dry Drilling Porcelain Ceramic Granite Marble Masonry Stone(6/6/6/8/10mm, 5 Pack)

Total 5pcs/set: 4pcs quick-fit hex shank drill bits(6/6/8/10mm) + 1pc 6mm carbide triangular drill bit. Quick-fit Shank drill bits: diameter 6mm, total length 68mm, diamond height 10mm. Diameter 8mm 10mm, total length 80mm, diamond height 10mm. Wax inside for cooling, dry drilling without water. Carbide triangular drill bit: total length 77mm. Used to provide accurate positioning for diamond bit, not for drilling. Operation: Drilling for granite, porcelain tile, ceramic tile, marble, stone, masonry. Applicable machines: Electric hand drill, bench drill, etc; Please ensure that the drill speed is over 2000RPM. The higher the drilling speed, the longer the product life.