That is a custom made side bar that is mounted the whole way around the inside of the fishing deck gunwales it is aluminum covered in a thick rubber. I then made aluminum clamps and drilled and tapped the scotty rod holders and put threaded stainless bolts thru the clamps to hold them onto the rubber strip. I only use them on the back of the boat as on the sides they allow the rods to protrude too far into the deck space on the boat and people run into them. the bar on the side makes a nice leaning rail on the gunwales. They work great for bottom bouncers off the corners or running stern planers. they slide on the rubber bar so you can position them wherever you want.