Sprinkler Buddy 7 Pack - Cut to Fit Sprinkler Donuts Sprinkler Guards. for pop up Sprinkler Heads. Remove Sprinkler Head to Install. Made in USA Sprinkler Buddy doesn't sink or float away like other sprinkler donuts, makes finding and prepping sprinkler heads for summer and winter a breeze. Custom fits to Sprinkler Rotors & Spray Heads. Sprinkler Buddy has a 7" outer diameter, the user decides the center hole diameter when installing for a true custom fit. Keeps sprinkler heads visible so one can avoid running them over with mower tires. Sprinkler Buddy prevents grass from taking root around the sprinkler head. Designed to be straddled over with mower tires when mowing, if the sprinkler head and Sprinkler Buddy have both been installed properly. For Underground Sprinkler Systems with popup sprinkler heads. Also known as sprinkler head rotors and spray head sprinklers.