The Great Lakes Planers Vertical stack Triple “bird tree” style rod holders includes a 32” X 2” OD Aluminum mast, 3 rod holders, and your choice base types. Vertical stack rod holders can be ordered with a standard base, track compatible base, Big Jon flush mount compatible base, removable cylinder track base, vertical mount base or custom bases. All of our vertical stack rod holders have a rod holder end cap at the top of the mast that can be used as an additional rod holder or net holder. Our track compatible bases will fit Bert’s, pursuit, traxtex, cannon and titloc track systems. Assembly is required with this option and should be completed by a qualified marine electronics technicianAssembly is required with this option and should be completed by a qualified marine electronics technician.