Diamond Grinding Block With 3 pieces 25*12.5mm segments 9mm Holes

1.Material is high quality diamond powder,metal bond 2. Segment diameter is 25mm, height is 12.5mm,hole size is 9mm, 3 holes 3.Bond can be super hard, very hard,hard,medium, soft,very soft,super soft 4.Grit can be #16,#30,#50,#80, also accept customized 5.Application is for concrete,marble, granite, terrazzo, quartz, limestone and other material grinding Hole size 9mm Segment size 25*12.5mm Grit #16,#30,#50,#80 Material  Diamond metal bond