Brocraft Universal Track Bracket for Tracker Boat Versatrack System/Lund Sport Track Platform dimensions 6"x6" ,fits BroCraft , Bigjon, Cannon and Scotty Downriggers, Made by marine grade T6 aluminum alloy with CNC processing, Works for Lund, tracker, and any other boats with a track system, Quickly move the base along the track Pre Drilled and Tapped., include four screws, Come with a two years limited warranty