Orbit Voyager II Adjustment Key 55070 - The Home Depot
Quick Snap 5,000 sq. ft. Buried Sprinkler Kit, Orange Locator Cap, Adjustment Key, Hose Quick-Connect with Auto Stop at Tractor Supply Co.
172000 Hunter Adjustment Wrench — Sprinkler Supply Store
Rain Bird Green Plastic Rotor Adjustment Tool - Easy Maintenance & Adjustment for Rain Bird Rotors - Universal Wrench & Screwdriver Combo in the Underground Irrigation Tools department at Lowes.com
4 Easy Ways to Adjust Hunter Sprinklers - wikiHow
Rotor adjustment tool
Diversion Hidden Safe Stash Box Sprinkler Head Key