SPRING ASSISTED FOLDING POCKET Sharp KNIFE Tac-Force American Flag Serrated Tactical Combat Tactical Knife + eBOOK by Moon Knives &hellip; Replacement sponges come in Medium, Fine and Medium / Fine grit. Also availble in 5 packs. Provide superior finish to sanding screen of same grit used by other dustless drywall sanders Vacuu-Sponge is the only sanding sponge that connects to your vacuum for dustless sanding Captures nearly 100 % of the dust Sponges last longer because of reduced clogging as a result of dust buildup.