1、Made of metal material, the follow focus is in good quality, solid and durable. 2、It has excellent damping performance, giving you precise focusing. 3、Compatible with standard 15mm rail rod. Suitable for almost all DSLR cameras. 4、It is allowed to connect multiple accessories, including arm extension, m 0.8/ m0.5/ m0.6 gear, in order to work with different cameras and lenses (such as C300, nex-fs700, etc.) . 5、Easy to install and use, portable and lightweight, convenient to carry. Features: 1. Made of metal material, the follow focus is in good quality, solid and durable. 2. It has excellent damping performance, giving you precise focusing. 3. Compatible with standard 15mm rail rod. Suitable for almost all DSLR cameras. 4. It is allowed to connect multiple accessories, including arm extension, m 0.8/ m0.5/ m0.6 gear, in order to work with different cameras and lenses (such as C300, nex-fs700, etc.) . 5. Easy to install and use, portable and lightweight, convenient to carry. 6. Synchronous wheel mounting interface (compatible with ITZ X typel), damping adjustment limit knob, marking lever Angle adjustment bit lock and knob arm Angle adjustment switch plate buckle. Specification: Brand Model: FOTGA DP50OIII Material: Metal Color: Black + Blue Suitable for all DSLR Cameras, Video Cameras Packing List: 1 * Follow Focus 1 * Gear Ring