Diamond Drill Bit 20mm, Hexagonal Shank Tile Drill Bit Set Diamond Hole Saw for Fine Stoneware, Ceramic, Stone, Granite, Marble Diamond Trunk Drill Bit Set (2 Pcs)

Size:2pcs/pack(20mm), Diamond Height 8mm, Total Length 65mm, Quick Fit 6.5mm, Diamond Grit #50/60 Diamond Core Drill Bit Wide Applications Diamond drill bits are ideal for drilling holes through hard porcelain tiles, ceramics, bathroom tiles, granite and marble, masonry, concrete, glass and hard plastic. Using water can extend the service life MATERIAL - Using vacuum welding technology that increases temperature and friction resistance to better fix diamond particles to the center steel, you improve performance and service life. Made with diamond grain for effortless cutting and improved durability in tough applications. core steel body helps to be more efficient and durable, not easy to deform PERFORMANCE - The special design of spiral groove at the tip of the drill bit helps to remove chips, wax inside the drill bit is helpful for cooling and lubrication Machine - Suitable for all electric drills, hand drills, bench drills. If you use angle grinder, please install the angle grinder chuck