The SmallRig HDMI Cable Clamp is compatible with the SmallRig A7S III Cage. Designed to prevent the camera's HDMI cable from accidentally disconnecting, this clamp attaches to the side of the cage using a 1/4"-20 screw and two anti-twist pins. The easy-to-grasp Knurled 1/4"-20 screw adjusts a sliding block that can be tightened to accommodate HDMI cable of varying diameters. This Cable Clamp is constructed of a sturdy aluminum alloy and comes with an Allen wrench.