The Hayward SP1434PAKA Jet Air III Body works with the Jet Air III system and offers interchangeable jet nozzles, allowing for multiple configuration options to achieve the type of hydro-massage action you want, where you want it. Using Hayward's Adjustable Jet-Air III system, you can control the water and air flow right at the jet face. The SP1434PAKA Jet Air Body has a 1.5 inch fitting for water and a 1.5 inch fitting for air.