... A/GC ceramic/vitrified grinding wheel 1.toughtness,longlife durability,35m/s 2.first grade material GC,60# 80#120#,etc WA/A ... /GC ceramic/vitrified grinding wheel1.It is in high ... hardness and brittle, it is made of first grade material A ... non-ferrous metal and non metal materials,etc4,a serious of sizes,according to your request, ...