Wrench for AmStan Diverter

The diverter in the American Standard bath faucet we have is famous for having a tiny washer wear out on a regular basis, necessitating buying $14.98 worth of additional parts to get the 1 cent washer. Unscrewing the diverter can also be tricky if it's tight. I created this wrench to, I hope, help alleviate some frustration from my fellow sufferers.