Gilmour 193MPS Impact Sprinkler With Spike Base Coverage Area: 86 ft. diameter Sprinkler Head Type: Impulse Base: Spike Head Material: Poly Features: Water coverage up to 5800 sq. ft. 86 ft. diameter Provides full or partial coverage Impulse arm eliminates wasteful side and back splash Diffuser screw allows for easy fingertip adjustment of water stream for even coverage Impact resistant, rust resistant polymer and stainless steel construction Impact resistant, rustproof polymer triple spike base with foot step