Feature: 1.double row, metal body 2.good balance 3.lifespan 6-8times of press steel 4. ... stones such as granite, marble, natural and artificial stones, etc.2. For fast rough dry or water-cooling grinding, leveling, shaping ... , M16 etcgrit: #36,#60,#80,#100,#120,#180,#200,#220body: metal, eluminum; with or without holescolor: customize color available More pictues ...