Features: Universal quick release standard clamp mount with 1/4"-20 threaded hole and adjustable knob. Made of anodized aluminum, CNC-machining, lightweight and full durability for long service life. It can be installed on cold shoe, camera cage or standard rails, and connect with video monitors, microphones, video LED lights through hinged magic arm, monitor support ballheads and others. Adjustable knob lock handle, 360 degree adjustment, keep the device from blocking the lock handle and lock easily. You can attach on the top or side of camera cage with standard rail. Exquisite technology, beautiful appearance designed, small and portable, providing you good using experiences. Specifications: Main Material: Aluminium-alloy Color: Black Size: Mixed Size Applicable: for RSC2 and RS2 Function: extended lighting, microphone and more Features: chute-design, fast switching Process: CNC-machining and cutting process Package Includes: 1Pc Quick Release Rail Clamp note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different monitor resolution.