I spoiled my self with this set of impact sockets in anticipation of installing front end struts in my 2014 F150. Anticipating rusty situations, I didn't want to rely on my regular sockets with my impact gun. They worked great! The laser etched size designations were fine. Sizes are also stamped on the sockets. They are heavy duty and I don't see why anyone would pay more. Be aware for some reason that \"31\" socket is not included?