ITEM NAME:4 Inch Diamond Cutting Disc Coated Grinding Wheel Disc Grinding Wheels Grin S5J7 4 Inch Diamond Cutting Disc Coated Grinding Wheel Disc Grinding Wheels Grin S5J7 1.grinding wheels are more wear-resistant than ordinary ones and have a longer service life. 2.Coarse high quality Diamond grain ensure aggressive working performance. 3.Great tool for DIY, craft work, jewelry making or silver smithing. 4.Perfect For Cutting: Gem stones, metal, glass, ceramics, porcelain, tiles, car.Grinding wheels are more wear-resistant than ordinary ones and have a longer service life. Coarse high quality Diamond grain ensure aggressive working performance. The wet / dry cutting idea in glass, marble,jade,ceramic,slate,granite outstanding cutting performance.