The Great Lakes Planers bases consist of a 2” x 5” cylinder that is welded to a ¼” flat plate. The cylinder is high strength, 6061-T6 aluminum with 1/8” walls. The removable cylinder track base is designed to set on top of most tracks and secures to the track with thumb screws that attach to a “tapped” ¼” plate that is slid into the track system. This system makes the rod holder or planer mast easier to remove than a standard track base. Tracks not included with base.