For over 10 years HATOKU has been manufacturing and supplying tools to the world. We are in business to bring affordable dependability to the world of tools. Hatoku 8 Pieces Pumice Stones for Cleaning Are you still bothered by clogged brushes? Our pumice can help you quickly and easily clean stubborn hard water deposits, calcium deposits, corrosion and rust. Perfect size to help you clean edges and gaps for easy access no more dead ends. Product specifications: Color: grey Quantity: 8 pieces Size: 3.9 x 1.5 x 2.8 Inches (10 x 7 x 4 cm) Our pumice is fine and strong, with high density, no irritating chemical smell, no more chemical detergent is required, very safe; It will not scratch your tiles and metal; Note: Better to soak the area and the gray pumice before cleaning Our pumice is made of good materials, fine and strong, with high density, no irritating chemical smell, no more chemical detergent is required, very safe; It will not scratch your tiles and metal; Note: Better to soak the area and the gray pumice before cleaning Our pumice is made of good materials, fine and strong, with high density, no irritating chemical smell, no more chemical detergent is required, very safe; It will not scratch your tiles and metal; Note: Better to soak the area and the gray pumice before cleaning Our pumice is made of good materials, fine and strong, with high density, no irritating chemical smell, no more chemical detergent is required, very safe; It will not scratch your tiles and metal; Note: Better to soak the area and the gray pumice before cleaning