Features: Fit all 15mm rod system DSLR rig connector with 1/4" thread Used to connect the shoulder support, camera cage, magic arms, LED lights, flashes, LCD monitors and follow focus and so on There's a spacer between the knob and the clamp, this can protect the clamp and the knot from scratch Compact and convenient to carry, ideal for video and stills-DSLR photography. Easy to install and uninstall. Made of solid durable aluminum Suitable for: All the standard 1/4" screws All the standard 15mm rods Especially suit for the shoulder support, camera cage, magic arms and follow focus Note: Mount ONLY, Rod not included Specifications: Material: Aluminum Alloy (body)+Plastic (knob) Color: Black+Blue Maximum Height: 5.5cm Maximum Width: 2.5cm Quantity: 1 Pc Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. Package includes(No Retail Package): 1x Rod Clamp