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. Fitrs all Buddy BCD's.

BK16 is for twinning 10 and 12lt standard cylinders which are approx 7'' diameter.

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