Gotta love shoulders! They are responsible for turning great looking arms into "Damn give him a bandaid 'cuz he's cut!" The Steering Wheel Shoulder Exercise isn't as common as some others you may have done but that's probably only because most people don't think to add this variation to their workout!
This move is really a variation of the standard Plate Raise for shoulders where you'd grab a weight, hold it out in front of you and raise and lower it. Not only is this a great exercise to add to your shoulder workout, but it's an awesome do it at home (or anywhere else) shoulder exercise.