Pentair R111626 709 Back Aluminum Algae Brush with Stainless Steel Bristle, 9-Inch Algae brush with stainless steel bristles Perfect for removing tough algae on plaster surfaces Snap-adapt handle fits most poles Includes 1 brush per pack Measures 7-3/4-inch length by 18-1/4-inch height by 13-3/4-inch width