Pentair R111616 604A Back Aluminum Algae Brush with Stainless Steel Bristle, 6-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 8-3/4-inch length by 12-3/4-inch height by 8-3/4-inch width