High-impact, rust-resistant poly and stainless steel construction on impulse head. Provides full or partial coverage. Durable, rust-resistant poly spike base. Patented impulse arm saves water by eliminating back and side splash. Diffuser screw allows for easy fingertip adjustment of water stream for even coverage. Water coverage up to 86 ft Dia at 30 psi and 112 ft Dia at 60 psi.