Description: 【Friendly Design】:Fip inlet return fitting is designed for in ground and above ground swimming pools, and the inlet return connection is equipped with a gasket and lock nut. Inlet and return fittings can be precisely replaced. 【Easy to Use】: Famale inlet pipe thread ,Front has 1 1/2" female threads for eyeball fittings and back has 1 1/2" female threads for use with hose connectors. 【Inlet】: Has 1.5" male and female threads for hose fittings, use threaded clamp/hose barb hose adapters or adapters for hard pipe connections. 【Use】: Directional flow inlet fitting with a 1.5" internal thread, this FIP (internal thread) inlet fitting is suitable for outlet caps, directional fittings (eyeball fittings), spa fittings, pool spouts, and more. 【Prevents leaks】: Both lock nuts and washers allow inlet fittings to connect through fiberglass pool or vinyl pool liners without leaking. Size Chart: Package:12cmx16cm/4.72inchx6.30inch Package Includes: 1 FIP Inlet Return Fitting  Note: Please allow slightly errors due to manual measurement and different monitors.