Fits for Pentair 2inch check valve 263042 ONLY. Not compatible with for Pentair FullFLOXF 2-Way and 90 Degree check valves 263060 and 263077. Improved chlorine-resistant and corrosion-resistant fabrication on flapper and rubber seal. spring and 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 x 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin