SandBlaster sanding pads offer up to 3 times longer life and cuts up to 3 times faster than traditional pads. 4-1/2" x 5-1/2" x 3/16" thick for hard to reach areas. Color coded packaging for type of sanding job. 36 and 60 grit sponges coated in silicon carbide. 80 thru 320 grit pads made of aluminum oxide abrasive on 4 sides of urethane foam pad for sanding contoured and hard-to-reach surfaces. Rinse clean and use again. For applications ranging from paint removal to final finish sanding.