... 2,glossy polishing surface 3 use in dry condition 4,long life 5 hing efficient 1,suitable for the grinding process of ... convex or concave surface.2,the products made from diamond as ... ,granite and other special-sharped stone of the corner. diameterthickness grit3"2.0mm50,100,150,200,300,400, ... 500,800,1000,1500,2000,3000.4"2.0mm 50,100,150,200,300,400,500, ...