Uses BK3 style cam bands so the backpack or jacket can be removed by uncamming. Quick and simple, no tools needed.
Consists of four special length BK3 type cam bands, one 4-slot anti-slip rubber plate, and two special separation crimping blocks. Once correctly cammed using the special separation blocks, the twin cylinders are rigidly held in position.

It is the divers choice whether a manifold is used or two regulators. There is a reasonable amount of leeway on the bands to cater for cylinders with unusual diameters.

BK15 - for 5.5" (140mm) dia. cylinders
BK16 - for 7" (178mm) dia. cylinders
BK17 - for 8" (203mm) dia. cylinders