8" x No Hole discs are made with Aluminum Oxide grain containing a non-loading stearate to reduce clogging. The hook-and-loop grip backing on the disc allows for longevity and a speedy disc change. Made on durable "D" weight paper All discs are strong and excellent for sanding profiled workpieces. Ideal for finish sanding wood, paint, metal, plastic, and solid surface. These discs are used for dry sanding E-coat, primer, and paint finish. Commonly used within the automotive, woodworking, and solid surface markets. To use, attach disc to your appropriate back up pad attached to an orbital or DA disc sander. 25 discs per pack.