WHITE ONLY - GRAY IS DISCONTINUED BY MANUFACTURER The original style Adustable VSR jet is obsolete. This is a new style of the Adjustable VSR jet internal. It includes a new lock ring for retro-fit into existing jet bodies. In order for the new style internal to fit, the new lock ring must be glued into the existing jet body, making sure to align the tab on the lock ring with the slot in the jet body. Hydro Air Spa Jet Insert 55-470-2700 Adjustable VSR Handle Assembly, White 16-5773, 55-470-2701 Adjustable VSR Handle Assembly, Gray 16-5773GRAY