3M™ Hookit™ Clean Sanding Pad is for use with 3M™ Hookit™ Clean Sanding Sheets; Ideal for vacuum sanding applications.Foam-construction 3M Hookit Clean Sanding Pad features a 3M-patented, multi-hole pattern designed to evacuate dust and increase abrasive life for better performance and longer abrasive life. The medium density red foam construction of the 3M Hookit Clean Sanding Pad provides conformability and affords superior control during flat sanding applications using 3M Orbital Sanders. This pad is 0.5 in (12.7 cm) thick and attaches to 3M 3 in (76.2 mm) x 4 in (101.6 mm) Central-Vacuum-Ready Orbital Sanders and 3M Self-Generating-Vacuum Orbital Sanders.