6PCS Swimming Pool Pumice Stone for Cleaning Tiles,Stone Cleaning Block,Scour St
Safe and sturdy material: The style of swimming pumice pool tile stone is made of volcanic stone, which is safe for people, animals, and plants, relatively lightweight,and easy to carry and use. Compared to others weigh 2.5 oz per unit, our pool pumice stones weigh 4.6oz each, which is heavier and lasts longer than others.