The adjustable pole holder fits into your trailer hitch. the pole holder has a adjustable rods with multiple holes so that you can slide the rack out so you can lay down your tail gate with out interfering with your rods. the rod slides under your vehicle so you can move the rods closer to your vehicle if choose. there is a hook on each side of the rack so that you can strap down your rods, or even add a cable and lock to secure your rods while driving. the entire unit is solid stainless steel so rust and corrosion will never be an issue.