The Hayward Power-Vac cleaning heads are molded of tough, durable Dural and are engineered to handle all types and sizes of swimming pools. The 360 swivel hose connector allows you to easily maneuver the vacuum head inside of the pool, while the "see-thru" head lets you view the bottom while you are cleaning. These cleaner heads are definitely the industry standard. Features: Contoured shape provides for easy corner and step cleaning Optional weight package for extra vacuuming convenience 360-Degree swivel connector ends aggravating hose tangling "See-thru" design for fast and easy cleaning Long-wearing brushes quickly loosen tough algae spots