3M 5" HOOKIT SOFT INTERFACE PADS – Constructed of a soft durable foam. When used with a Clean Sanding Hookit™ Backup Pad it increases conformability allowing the technician to follow contours and get in closer to most edges while maximizing dust extraction. The same increased conformability is obtained when using non vacuum Hookit™ Discs. For use with 5" Hookit discs. Sold by the pad.