Taco Marine's Rigid Vinyl Flex-Core Rub Rail improves on the design of their most popular rigid PVC shape with a lightweight, high-density inner core. This allows for easier handling, faster one-piece installation, improved dimensional stability and production run consistency. It receives the S11-4511 3/4x9D hollow-back stainless steel half-oval insert and is ideal for boats 20 to 40 in length.