The Hayward Triangular Vacuum head features 3 brushes and is molded of tough, durable thermoplastic and is engineered to handle all shapes and sizes of swimming pools. The 360 degree swivel hose connector on the Hayward Vac Head allows you to easily maneuver the triangular vacuum head in the swimming pool, ending annoying hose tangling, while the see-thru vacuum head lets you see the bottom of the pool while cleaning. The Hayward Triangular Vacuum Head accepts both 1 1/4″ or 1 1/2″ sizes of swivel vacuum hoses.