The C.E. Smith Company 60 in Post Boat Guide-Ons 2-Pack are made of PVC material and provide the location of your trailer underwater. The tubes adjust out to 19 inches on each side, and fits frames up to 3 inches W x 4.25 inches H. Standing 60 inches above your trailer frame, the posts ensure visibility as you back your trailer down the ramp. 2.38-inch diameter posts.
