... BackingBondGrit SizeA.OC/D paperR/R2436406080100120150180220240280320360 400 PackingPer bag100Per carton1000Emery cloth sheetGrain : Aluminium oxideBacking : C/D weightCoating : close coatedMaterial: 100%Cotton ... (resin over resin, resin over glue, glue over glue) Emery Cloth sheet