These Post Guide-Ons allow you to see the location of your trailer when it's under water. The 2" PVC tubes make it easy to see your trailer's position when backing down the ramp. Features Mounting hardware included. Sold in pairs 1-1/2" square, 16 gauge pre-galvanized steel uprights 2" schedule 40 white PVC posts (2-3/8" actual OD) Stands 60 in above the trailer frame with white post caps Installation Instructions Made in Usa Specifications Color: Black Adjusts out: 13 in each side Fits Frames: up to 3 in. W x 4.25in. H Height: 39 in. Weight: 23.00 lbs