2 union connector kits. Compatible with Hayward part number SPX3200UNKIT. Compatible with Hayward TriStar SP3200VSP series pumps, including models: SP3202VSP, SP3200VSPND, SP3202VSPND, SP3206VSP, SP3206VSPVR, SP3200EE, SP3200X, SP3600. Compatible with Hayward Northstar SPX4000 and SP4000X series pumps (models from 2008 and later only), including models: SP4005(NS), SP4007(NS), SP4010(NS), SP4015(NS), SP4020(NS), SP4030(NS), SP4007X10(NS), SP4010X15(NS)/2(NS), SP4015X20(NS)/2(NS), SP4020X25(NS)/2(NS), SP4025X30(NS). Compatible with select Hayward EcoStar Pumps and SwimClear Cartridge Filters including models: C2030, C3030, C4030, C5030, C7030. Also compatible with select Hayward Universal H-Series Low Nox Heaters. Replacing the union connector kit can return your swimming pool or spa system back to peak performance and efficiency. Made from heavy duty premium materials for durability and performance. The brand names and logos are the registered trademarks of their respective owners. Any use of a brand name or model designation for this product is made solely for purposes of demonstrating compatibility. Packaging may vary.