Features1. 100% high quality and brand new 2. The main body is made of metal materials 3. Use of leverage can be installed columnar, plate or irregularly shaped surfaces 4. Calipers tooth is made of non-slip rubber, locked or open by screw-step control, very strong and stable 5. 1/4 inch and 3/8 inch screws hole 6. Recommend using on the diameter of 2-4.5cm bracket

http://olla.gr/slider-magic-mount-backhoes-large-claws-clip-for-slr-cameras-black/