Ratchet: "The large one is for working on the vehicales. It has 2 smaller manipalater arms in the harnice for detail work the lavge pincer to hold have parts with 20 times the stangth of your old one it can lift a whole engin. It also has a rotary saw, welding torch, and high power laser cuter. As well as a built in tool kit and a drill. So it makes you in to a swiss army knife for the hanger with it on but its on the heavy side."