I-Divesite 14 inch flex arm 3/4" (YS-head)

Flexible arm with YS-head and T-mount fitting. Will work easily on a tray with a T-connector.
Larger than the FELOC-14T (3/4" instead of 1/2")
This will give a better firm hold when using larger lights.

Easy to take off under water if you wish to place your light somewhere above or behind the subject.
Great and affordable and you don't need a handle as the arm can be used as such.
A thin wire inside the armï¾ is securing your light.