With highperformance zirconia alumina plus abrasive, the BlueFire R884P coarse grit arbor thread fiberglass conical flap disc offers an aggressive cut and up to 30 longer lifespan than competitive zirconia alumina discs A fiberglass and resin backing combines lightweight with high strength, absorbing vibrations and aiding in operator comfort The coarse grit is made for deburring, blending and removing stock from soft carbon steel and other soft metals, stainless steel and titanium The polyester and cotton angled flaps offer great surface contact and are ideal for removing stock quickly from contours and edges