Hunter rotor adjustment tools are specifically designed for nozzle installation and adjustment. We carry rotor adjustment tools for all Hunter rotor models. These rotor tools allow you to adjust the rotor arc and radius, pop up risers, and install nozzles. We also offer an all-in-one rotor adjustment kit for the PGP-ADJ, our most popular rotor. This kit includes a rotor nozzle adjustment tool, PGP adjustment instructions, 12 standard nozzles, and a nozzle retainer/radius adjustment tool.