Get excellent performance and efficiency on your metalwork projects by using the Red Heat R961 coarse grit arbor thread fiberglass conical flap disc. The angles polyester/cotton flaps, combined with the premium ceramic alumina and zirconia alumina abrasive blend, makes the disc the perfect solution for coarse grit blending, deburring, and stock removal for edge and contour work. The vibration-absorbing backing plates retain their lightweight durable structure due to fiberglass and resin construction. The discs help speed up your job by providing maximum surface contact.