SHDIATOOL Diamond Drill Core Bits 5 Pieces 1/4 Inch for Porcelain Tile Marble Ceramic Granite Bricks 6mm Diamond Hole saws Dry/Wet for Hand Drills - SHANGHAI DIATOOL CO., LTD., A8600610x5T

• 1.Application: Dry/wet drilling for porcelain tile marble stone masonry brick normal stone 2.Better Performance: High quality Diamond Grain and Vacuum Brazed technology provide much longer working life,fast and smooth drilling 3.Durable and Efficient:Each dry diamond bit is embedded with wax that will melt during dry drilling to cool the cutting surface. Water can act as additional cooling to prolong the worklife of bit 4. What you got: 5pcs Diameter 6mm(1/4"), with triangle shank, Total height 65MM, Diamond height 10MM 5. Machine: Connection With triangle shank for Hand Drill, Bench Drill and other machine need triangle shank