Features: Material: aluminum, stable and durability. Equipped with 360 swivels head on end of arm allows you to use it comfortably when you need the device at any angle. With a locking control knob to release or amplifies tension, this precise and duraility bracket arm can provide movement in all positions. Suitable for HDSLR movie production, especially for photo or video follow. Can be used to mount LED lights, flashes or LCD monitors to your DSLR cage, DSLR camera, rail bar (clamp) or shoulder bracket. Specifications: Material: aluminum Load: 3kg Thread Screw Size: 1/4inch Product size: about 15x6x2.50cm/5.9x2.36x0.98 Weight: 177g Package Includes: 1PC bracket arm note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.