Pentair 1-1/2" MPT Ultimate Eyeball Inlet Fitting [White] (542087) waterway and this generic version uses

and this generic version uses the O-101 reference

Filter cartridge for compatible C-9485 and PA85 spa and pool applications

Single-port flow-path assembly for compatible Balboa Magnassage jets

this Allen wrench tool helps support cleaner safety cover service and contributes to better overall maintenance efficiency

For best results

Pentair 1-1/2" MPT Ultimate Eyeball Inlet Fitting [White] (542087) waterway and this generic version usesThe Pentair 542087 Ultimate eyeball inlet fitting is designed for compatible return fitting applications using a 1 1 2 inch MPT connection and white finish. An eyeball inlet fitting like this is useful because it helps return water to the pool or spa while also allowing directional adjustment of the return flow. Replacement is often appropriate when the original fitting is cracked, damaged, worn, or no longer adjusting or fitting correctly. Installing