Your one winning bid buys one box of 100pc of this sandpaper 5" PSA Disc. 5" Paper Backed Abrasives Pressure Sensitive Adhesive (PSA) Aluminum Oxide 100 Discs/Box SurfPrep’s blended paper backing provides for enhanced support of grain and edge-wear, Our premium abrasive grain in an open coat construction provides a true, consistent & uniform scratch. Innovative ‘load-free’ coating provides for a fast rate of cut and longer life. Any questions please email me before your purchase