Gator 3x4x1 Sanding Sponge Coarse, 2 Pack

I'm not much of a 'handy-person', so this was my first time using anything like this. I had a crack in my bath tub that I wanted to fix myself (as a challenge)! I used the spray foam for support since it didn't have ANY support initially - touched up the outside with the waterproof putty, then finished it off with this sponge to sand it down. It worked well! Of course, it took some elbow grease, but I got there eventually! I like the sponge idea so that it isn't too hard on the hands otherwise. It worked great for what I needed it for. I'm no expert though - take it with a grain of salt!