You choose the right Halcyon Single-Tank Adapter (STA) system for you.
* Convertible System gives you the best of both worlds. The light weight stainless steel channel weights just one pound and comes with two tank straps. But you can add the 5lb. weight to create a trim 6lb. weight system.
* The standard Single-Tank Adapter system includes the light weight stainless steel channel and two tank straps.
* The 5lb. weight can be added to your existing Halcyon STA to give you the flexibility of the convertible system.