... used 150#,200#.Usage: (1)Simple sheet glass,ground glass,sandblasting glass,patterned glass,wire glass,hollow glass,laminated glass and glass block.grit size from 80 to 120 ... high speed. (3)Overglaze color,underglaze color,underglaze blue,wall brick,floor tile,sanitaryware,ceramics,silicate product silicon pellet.grit size from 60 ...