Fotga 7" Friction Articulating Magic Arm for DSLR Camera Hot Shoe Monitor LED Light This magic arm is with Precise Design, allows universal mounting options Supplies 1/4'' screw adapters to fit camera, lamp holder and other accessories Articulating design, with one knob locks all position.Superior quality, precise and durable design Easy to install, each joint is adjustable, and all of them is locked with one knob Kindly Note: the Monitor,camera cage rig are not included!!