Product: reinforced glass fibre discs for grinding wheels Specification: plain or leno Cover: blackpaper, fleece or crepe paper Weight:14*14 56g, 14*14 85g, 14*14 125g, 8*8 125g, 5*5 160g, 6*6 190g, 5*5 260g, 5*4 320g, 5*4 380g, 8*8 220g, 8*8 260g, 8*8 330g, 11*11 260g, 11*11 320g, 18*18 180g Outer diameter:70~8001611 inner diameter:10~601611 Packing: 300 1200 1600 161;-161;-pcs per box