MEDIUM-SIZE BRUSH FOR CONTROLLED CLEANING: 10-inch brush head offers the perfect balance of coverage and control; ideal for pool walls, floors, and steps without the bulk of a full-size brush POWERFUL ALGAE REMOVAL: Stainless steel bristles break up stubborn algae, stains, and debris on hard pool surfaces for deep, effective cleaning FOR GUNITE AND CONCRETE ONLY: Designed for inground pools and spas with plaster, gunite, or concrete finishes; not safe for vinyl liners or fiberglass surfaces HEAVY-DUTY ALUMINUM CONSTRUCTION: Die-cast aluminum back and handle provide strength and durability for tough scrubbing and long-lasting use UNIVERSAL FIT AND EASY USE: Attaches to standard 1.25-inch telescopic pool poles (sold separately); great for routine maintenance, spot cleaning, and seasonal pool care