Suspend your light, microphone, or camera rig over your subject using a rod system with this pair of Clamps for Wall Spreader from Proaim. The two clamps feature a stud that mounts a separately available 44mm diameter rod and mounts between two walls. Each clamp features two tightening screws that provide a pressure mount, so no drilling or permanent mounting is required. The durable aluminum clamps can hold up to 22 lb, dependent upon the durability of the rod used.