Securely mount your camera, phone, or accessory onto a flat surface or cylindrical object with the ST83 Super Clamp with Dual Ball Head Magic Arm from Neewer. This clamp grips objects with a diameter of 0.6" and features two 360° rotatable ball heads that can be adjusted to any required angle. With its aluminum alloy and stainless steel build, the durable ST83 holds objects up to 7.7 lb using 1/4"-20 and 3/8"-16 mounting threads.