Draft Arm Wrench – Beer Faucet & Tower Tool The must-have draft beer wrench for anyone who installs or maintains a kegerator or beer tower. This versatile beer faucet tool is designed to reach tight spaces inside your draft system. With a 1" end on one side and a 1-1/16" end on the other, it easily adjusts both common lock nut sizes on your beer tower shank. Built for durability and convenience, this beer tower wrench also features a handy bottle opener—so it works hard on your draft system and doubles as a bar tool when the job is done. California Proposition 65 ⚠ Proposition 65 Warning: This product can expose you to chemicals that are known to the State of California to cause cancer and birth defects or other reproductive harm.