Sprinkler Head Adjustment Key

There are slim but not completely zero chance you will need this tool to adjust the sprinkler head if you have a back yard with irrigation system. You can buy it for $1.6 from hardware store, but you don't have to if you have the right size allen wrench (two opposite flat sides measured 2.3~2.5mm). I created this model to save you a trip to hardware store and probably $1.6 plus tax plus future trump tariff:)