Curved Standard Algae Pool Brush - 18 in Metal Bracket Stainless Bristle Plastic Block Standard algae pool brushes are made of five rows of rust-free stainless steel wire to remove algae and mildew Curved Standard Algae Pool Brush - 18 inch, with Metal Bracket, with Stainless Steel Bristle, Plastic Block -- 1 each. Shipping Dimensions: 1.20