692-801H 8 IN HOOK, LP, VACUUM Create an account and/or login to see pricing and order online. 692-801H Overview 8 in backup pad for the 690-57704 sander. Hook and loop for long pad life 8 holes for great dust extraction  Backup Pads Backup pads are available in three styles: J-Hook for DustMaster Supreme Abrasives and conventional hook and loop abrasives. Hook for conventional hook and loop abrasives only. Vinyl for pressure sensitive abrasives (stick-on).  Abrasives and Backup Pads Backup Pads and Abrasives to keep your Clayton Sanders and other pneumatic tools working great. NSN's available on most items.