Review on 🔧 Superior Performance Tool W377B Jumbo Wrench: Perfect for Heavy-Duty Tasks by Ron Turner

Key for 2 hitch balls 5/16". Almost 2 feet long, this is a giant wrench, but it provides leverage to loosen the large nut on the ball. Simply pull the coupler out and rotate it 90 degrees so the nut is on the side, push the pin back into the coupler, and then use a wrench to loosen the nut. Think about what you're doing before you do it so you don't end up with gnarled shins, scratched paint, or a wrench to the head.