Bought a gear wrench for the first time and am very happy with it. There was a situation where one of the ratchet mechanisms jammed on first use. I ended up putting the fastener in a vise and rocking the end of the ratchet back and forth to loosen it. I suspect a burr or something in the mechanism. All the others were fine, so I think this one was just an anomaly. I would buy them again if I need them in metric.