CE Smith Post Guide-Ons W Unlighted Posts CE Smith boat trailer guide-ons with unlighted posts allow you to see the location of your trailer while underwater. When backing down the ramp the 2 PVC tubes make it easy to see your trailers position. Features Mounting hardware included Sold in pairs Adjusts out to 19 each side Fits frames up to 3 W x 5-14 H 1-12 square, 16 gauge pre-galvanized steel uprights 60 high 2-38 diameter white PVC posts Pre-galvanized Steel - stamped from a sheet of steel af