XS Scuba Aluminum Tank Rail KitAluminum Rails provide the best mounting option. By mounting to an aluminum rail, the tank holders can be easily slid in or out. The rails are available in two convenient lengths: a 2-foot version, which holds 2 tank holders or a 3-foot version, which hold 3 tank holders.
TR220 Two Foot Rail Holds two cylinders
TR200 Three Foot Rail Holds three cylinders