1 with this tool and it slips off. The wrench and flexible design are the reason I gave it 2 stars. A real ratchet could hurt someone. If you put pressure on it, make sure it slips off. In such tight quarters, one slip can put a person out of a job. I earn my living with my hands. I think I'll keep that thing in the back of my tool box. I can't afford to lose my job because of bad tool design.