Fits for Pentair 2inch check valve 263042 ONLY. Not compatible with for Pentair FullFLOXF 2-Way & 90 Degree check valves 263060 & 263077. Improved chlorine-resistant and corrosion-resistant fabrication on flapper and rubber seal. spring & pin make STRONGER spring tension; Enhanced cover construction to be anti-crack and sturdy. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Plastic Package Contents: 2 * Pool Check Valve Rebuild Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.