This is a background holder hook that will support up to 3 background crossbars or Expan Drives, when mounted onto the Manfrotto AutoPoles. It consists of two 2921 Cast Hooks mounted on Super Clamps.
Manfrotto Background Holder Hooks Overview
Manfrotto Background Holder Hooks Reviews
Info on mounting hardware to a super clamp:
If you need to mount to a super clamp, this comes with (4) 5 mm-0.8 x 16 mm internal hex plain steel metric socket cap screws [uses 4mm hex key, length is measured from the bottom of the cap to the end of the screw] with (4) 5 mm stainless-steel flat washers [i.d. 0.19 in, o.d. 0.37 in, thickness 0.032 in]. There are a pair of mounting holes on each side at the top, middle, and bottom of each bracket. I like to use two super clamps per bracket, and can confirm the orange box store has these exactly, #574193 and #366757. This bracket also comes with two plastic spacers if you only want to use one super clamp per bracket.
OMG!
Im so glad I found this. was looking for a way to hold multiple backdrops without having to drill in my ceiling or walls. I use this and can now change backdrops with confidence! No more standing on a stool, trying to keep my balance!!
