Fit for Pressure Vacuum Breaker Repair Kit is compatible with the 1/2", 3/4", and 1" Model 720A Pressure Vacuum Breaker Assemblies. Repair kits are used to repair most freeze-damaged 720A,unlessitself the Pressure Vacuum Breaker is cracked.Includes 1x Black O-Ring,1x Bonnet Plastic Washer,1x Spring,1x Poppet Valve and 1x Spider Screw.High Quality Material, Long Service Life.Our company provides 6 months warranty, if you have any questions about the product can contact us at any time