"I recently had an opportunity to do some 'millwright' work. Basically setting up machinery... alignment and adjustment. The first day I was using basic boxed end and combo wrenches. After watching the experienced millwrights use these gear wrenches, I stopped on the way home from the job and bought a set. Boy, was the next day easier. There were literally thousands of bolts to be tightened and these wrenches made the day much more enjoyable.
They are well made and sturdy enough to take the torque you need to put on them. The flex head gives you the positioning options you sometimes need to get to that hard to reach nut that a standard wrench can't get to. This set was one of the best investments I've made in tools in a long time."
What is your level of technical expertise? Professional