Hayward Locknut Fitting Gray (SP1023DGR) pooltool and this Darlly cartridge is

and this Darlly cartridge is designed for compatible applications referencing FC-0168 and 4CH-926

Directs water flow efficiently

Black square deck plate cover for compatible Hayward skimmers

That makes the small-size design a practical fit for tighter installations

Hayward Locknut Fitting Gray (SP1023DGR) pooltool and this Darlly cartridge isRefresh the return side connection with this gray Hayward locknut fitting, a practical replacement part for inlet and outlet fittings that need a secure, finished hold. It is designed for service work where a worn, cracked, or missing locknut can compromise the fit of the wall fitting or return assembly. Use this part when restoring a Hayward pool fitting, tightening an existing installation, or completing a repair where dependable thread engagement