The Wooden Camera 15mm Tube Clamp for Blackmagic URSA Cameras attaches under or over the Blackmagic URSA Handle. It allows you to attach your Wooden Camera UVF Mount to your Blackmagic URSA. The tube clamp's screw slot allows you to attach two 3/8-16 mounting screws up to 54mm apart center to center. The mounting screws can remain captive in the track so you are less likely to lose them if you remove the tube clamp from your URSA camera. The tube clamp features a spring-loaded clamping lever so you can secure an optional 15mm rod in the clamp, even if you are unable to move the lever throughout an entire 360° of rotation.