... for general surface treatment. Raw material: PA612 Grit :silicon carbide,aluminum oxide, diamond Grit size :36#,46#,60#,80#,120#,180#,240 ... for general surface treatment. Raw material:PA610 Grit :silicon carbide,aluminum oxide, diamond Grit size :36#,46#,60#,80#,120#,180#, ... useful for general surface treatment.Raw material: PA6,PA610,PA612 Grit :diamond Grit size :36#,46#,60#,80#,120#,180#,240#,320#, ...