Milliard Blue Crescent Weighted Vacuum Head Handle has spring-loaded locking clips for attaching extension poles. Curved plastic body aids maneuverability to navigate along walls and into corners for a more complete clean. Weights keep the vacuum head at the bottom of the pool where it belongs. Nylon bristles at the bottom keep it from scratching or scraping delicate surfaces. Made from ABS plastic to be durable and long-lasting. Cleaning surface is 11 wide.