OMS Single Cylinder Adaptor inc Cam Bands BCA290K 

All OMS^®  Backplate / Harness systems can accomodate a single cylinder just by adding Cam Bands.

The low profile Single Cylinder Adapter also allows the diver to use a single cylinder with any of the OMS^® backplate / harness systems but with added stability.

The Single Cylinder Adapter includes all hardware, (2) Nylon Cam Bands with Stainless Steel Cam Buckles. Total weight 3.3 lbs