Used on portable grinders for course and fine metal work. Versatile production-weight backing fully resin-bonded & coated with a tough, durable aluminum oxide abrasive in closed coat construction. SKU: 40007332 MFG: 81376 Shop more products by 3M. Get best discount deals on hand tool supplies. Your one-stop shop for buying Sanding Discs SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Free Shipping Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI $4.55 Quantity 25 50 75 100 125 150 175 200 225 250 In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 7" x 7/8" 50 Grit Heavy duty discs For fiberglass, wood and metal sanding Closed coat, aluminum oxide, fiber backed Tough as well as flexible Used for stock/finish removal FEATURES MFR: 81376 SKU: 40007332 UPC: 051144813766 Brand: 3M