3M(TM) Stikit(TM) Paper Refill Roll 415U, 3 1/4 in x 45 in 80 A weight, 10 per inner 50 per case A silicon carbide Stikit(TM) refill roll constructed on a A weight, light paper backing. Features an anti-loading stearate coating. Grade: 80. Primary markets: metalworking, woodworking.