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 aluminumgrit:40 to 1500size:3" to 9"density: semi-open,colse,openbacking:vecro(loop and hook),self-adhensive(PSA)hole:with or withoutcolor:red,white,black,yellow,green,orangecoated:with or without.shape:round,triangle,special ...