Nelson Brass Rainpulse Impulse Sprinkler Head on Tripod Base 222RC Brass rainpulse impulse sprinkler with a heavy duty shower head Circular spray pattern with pulsating sprinklers and a 90-foot diameter The head itself is constructed of heavy-duty brass, and the tripod base is aluminum A diffuser pin and baffle arm are included for adjusting coverage distance Actual base adjusts up to 72 feet