This tool is designed for light work at best. When I first used it, two teeth on the black gear broke. I've tried a few more times on other fittings with no success. A few teeth on the jaw are now knocked out. It comes with a 1/2" drive but when I used a 16" long 1/2" drive rod it was too much for this tool. The gear and jaw have noticeable play and backlash between them, and the teeth are a little flat for the torque it can see.I was very disappointed with this tool.It's a great concept but poorly made.