abrasive disc(sanding pad,polishing pad) sanding disc in different size and grit.. abrasive disc(sanding pad,polishing pad)material: aluminum oxide,silicon carbide,Zirconium ... to 9"density: semi-open,colse,openbacking:vecro(loop and hook),self-adhensive(PSA)hole:with or withoutcolor:red,white ... triangle,special-shapedmore information please contact us. abrasive disc(sanding pad,polishing pad)