RivenAn 7 inch Articulating Magic Arm+Large Super Clamp Large Crab Pliers Clip for LED light LCD monitor DLSR camera This magic arm and clamp kit is with precise design and smooth operation, allows universal mounting options. The arm supplies 1/4" screw adapters to fit camera, lamp holder and other accessories. Articulating design, with one knob locks all position. The clamp(Large-size 4.7cm Bite) is equipped with standard 1/4" and 3/8" screw holes. With two rubber soft layers, the clamp can prevent scratching. Made of durable Aluminum and metal. Perfect for LED light, LCD monitor or flash light etc. on cameras.