RailBlazas StarPort HD Track-Nut Kit allows you to install a StarPort HD on your kayak without drilling into your vessel. Once installed, the base can easily be moved along the track without tools, making on-the-water transitions a breeze. Kit includes two 1/4 x 1 hex-head machine screws, two track inserts, two track nuts and two spacer washers. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Accessories.