The W530 selfpropelled road widener, with its 114hp engine, is capable of widening roads from one to 10 feet with a working depth ranging from 12 inches above grade to 12 inches below grade. This unit has many of the same features and components as its larger counter part the W730. Even though it has the same big widener features as the W730, it can easily be put into a transport configuration of 120" wide. For more info go to http://www.weilerproducts.com/node/18