Henta Sprinkler Crown, Sprinkler Head Protection for Lawn & Garden (Plastic, Set of 12) Each Is Approx. 8" Diameter and approx. 1.5'' high Easy to Install And Sold In Package of 12 Units per Package Fits Various Sprinkler Head Sizes Protects Sprinkler Heads From Mowing Tools and Eliminates Constant Grass Shearing