Complete your blending, deburring, and dust removal projects at a greater speed by using the Gemini R766 medium grit center mount fiberglass conical flap disc. The disc gives you a greater surface contact and works on edges and contours due to its angled polyester/cotton flaps. The durable fiberglass/resin backing plates are user-friendly due to their light weight and vibration absorption. The alternating zirconia alumina and aluminum oxide grain is a cost-effective option for your medium grit cleaning, detailing and finishing as it works better than aluminum oxide.