Norton WallSand Single Angle Sanding Sponge (Medium Grit, 4-7/8in x 2-7/8in x 1in) utilize cutting-edge abrasive technology and innovative coating process, these sponges exhibit remarkable resistance to clogging, enabling them to deliver faster cutting performance and an extended lifespan. They outlast standard sanding sponges and can endure up to five times longer than traditional sandpaper.