The Hunter adjustment wrench consists of a 3/32 allen key, two convenient finger loops for gripping and an opposite side arc adjustment key for your Hunter PGP, PGJ, I20, I25 and I40 heads.
The Hunter Rotor adjustment tool is used to make arc and radius adjustments on each sprinkler in Hunter's product line
Tool is not compatible with Hunter Pro Spray and Pop up Hunter Heads. (Smaller heads typically found in shrub zones and boulevards) The correct tool suitable for those heads is the MP Rotator Tool
Hunter adjusting tool for PGM,PGP,I-20, I-25.
Hunter PGP Adjustment Tool - B000678LJY