Paper made by KOVAX®Abrasives, JapanFor jewelry and metals, mold polishing, electronic polishing, instrument polishing, and furniture polishing. Durable backing with aluminum oxidegrain for wet or dry sanding of harder sanding surfaces. 240 grit – 4 rolls 400 grit – 4 rolls 600 grit – 2 rolls 1000 grit – 1 roll 2000 grit – 1 roll Mounted on 3/32″ (2.35 mm) shanks for use in a handpiece. 5,000 RPM Max Speed As the abrasive wears, simply peel the paper back and tear it off to expose fresh abrasive. The roll is made up of 1″ wide x 10″ lengths of high-quality abrasive paper. Overall length of accessory is 2-1/4″ (57 mm).*Optimum Operating Speeds are much lower (between 25% – 50% of maximum speeds) and also depend on the type of workpiece. SKU: FOR-AK12151 UPC: 098666082089 Brand: ORO MPN: AK12151 Micro-Tools makes every attempt to provide accurate information for each item. Actual packaging and/or specifications may be slightly different from the information and picture provided.B068G