K Rain K8000 3-3/4-Inch Pop-Up Gear Drive Sprinkler 81031 K8000 gear driven sprinklers incorporate advanced engineering design principles and materials to insure reliable operation and guaranteed satisfaction Patented arc set indicator makes arc adjustment easy, the arc of rotation is clearly indicated on top of the sprinkler Multi-functional arc set and nozzle removal key makes installing or removing one of seven interchangeable nozzles easy Heavy duty, stainless steel, heat treated retraction spring for reliable retraction below grade even after years of use Replaces All Major Brands