I'm going out on a limb and guessing this guy is an electrician in a chicken processing plant. The rubber "fingers" he is using are the same as the ones they use. Their machine looks different but basically it works in a similar fashion in that it beats the feathers off after the birds have been scalded in a tank. His electrical skills look pretty good and he used his Channellocks backwards. I worked with an electrician who had that habit, but, a fine electrician he was.