Fitment: Fits 1/2 Inch to 1 Inch 720A. This Bonnet Repair Kit is compatible with 1 / 2inch, 3 / 4inch and 1inch 720A Bonner Repair Kits. Material: Made of stainless steel, wearresistant and prolong service life. Function: The 720A series pressure vacuum breaker assembly is designed for installation on potable water lines to protect against backsiphonage of contaminated water into the potable water supply. Advantages: Easy installation. Package included: Includes bonnet, canopy, and canopy screws. Note: If you encounter the problem of commodity damage or lack of accessories, please contact us in time to help you solve it.