This product simplifies the loading and unloading process by reducing the friction between your skis and the trailer decking. The lower profile of these guides allow for less interference when using your trailer for purposes other than hauling your sleds. Also, reduces damage to decking caused by carbides, and can help lengthen carbide life. Width is 6 1/8 inches wide by 3/8 inches tall and can accommodate all Polaris® and Woody's dual runner carbides. Handles snowmobiles with up to 8.5 inches of ski stance variance.