Mirka 22-580-320 BaseCut 2-3/4 in x 25 yd PSA Autokut Roll, 320 Grit, Qty. 1 BaseCut by Mirka is a an economical abrasive that offers the characteristics of superior Design, production processes and materials. BaseCut makes an aggressive initial cut and thanks to its durability has a long working lifespan that reduces cost. The BaseCut is ideally suited for a wide variety of applications, including wood, composites and more.