Polymer Impulse Spray Head On Polymer Sled Base, Durable, Rust Resistant Poly Sled Base. High Impact, Rust Resistant Poly And Stainless Steel Construction On Impulse Head. Fingertip Diffuser Adjustment Screw. Provides Full Or Partial Coverage. Patented Impulse Arm Saves Water By Eliminating Back And Side Splash. Water Coverage Up To 86 Feet Diameter At 30 PSI; 112 Feet Diameter At 60 PSI.