Green Thumb, 8,500 SQFT Coverage Sprinkler, Extra Large Water Jet For More Coverage Than Standard Pulsating Heads, 106' Diameter Coverage, Trip Levers For Full Or Partial Coverage With Reversing Full Circle Setting, Deflector Dial To Set Distance, Patented Impulse Arm Saves Water By Eliminating Back & Side Splash, Diffuser Screw Allows For Easy Fingertip Adjustment Of Water Stream For Even Coverage, Sprinkler Head Has 3/4" NPT Connection To Base, Solid Metal Impulse Head Construction, Heavy Duty Die Cast 3 Prong Spike.