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. Grits 40-120 are made on durable "D" weight paper. Grits 150-600 are made on flexible "C" 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. Ideal for use processing new generation water-based lacquers. 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. Discs are available in Grits 40 to 400 and in Packs of 25 or 50 discs.