1.Diamond grinding block material is high quality diamond powder,metal bond
2.Hole size is M8, two holes, segment size is 30*10*10mm, 3 pieces segments
3.Grit can be #16,#30,#50,#80, according to customized
4.Bond can be super hard, hard, very hard, medium, soft, very soft,super soft
5.Application is for concrete grinding and polishing