This item has revolutionized the way I do my setups/string changes. I can have a string change done in less than 30 minutes and a setup done in less than 60. The battery lasts a long time so I can keep pushing through all the string changes I need to do. It's low torque so I never have to worry about stripping out a tuning machine. It's an amazing piece of gear. Every tech and guitarist should have one.