The Pool Shop Pumice Block is designed to eliminate customary stains that can build up over time in your pool and spa. This natural pumice stone is easy to use and fits perfectly in your hand for up close spot cleaning. This pumice stone is not to be used on vinyl or fiberglass pools.
- 100% natural pumice
- Removes rust, mildew and mineral stains from pools and spas
- For use on ceramic tile, grout and concrete surfaces
- Includes one 1-1/5 in. x 3-1/4 in. x 6-1/4 in. stone