1. Made of metal material, strong, durable construction
2. It is versatile for DV DSLR film makers, especially for Follow focus users when taking photo or video, it can be used to mount LED light, flash or LCD Monitor on to your DSLR cage, camera, rail rod (clamp) or shoulder mount rig.
3. It is 11 inch in length when fully extended.
4. Large center locking knob to lock all movements, variable friction and position.
5. Hot shoe adapter to fit camera and camcorder
6. 1/4 inch screw adapter to fit lightstand, small flash, LED light & other accessories with 1/4 inch screw sockets
7. Calipers tooth is made of non-slip rubber, locked or open by screw-step control, very strong and stable. Use of leverage can be installed columnar, plate or irregularly shaped surfaces