[Versatile Mounting Solution]Featuring a super crab clamp and dual ball head, this set provides a flexible and secure mounting solution for various photography and videography accessories. [Durable Construction]The crab clamp is made of sturdy, rust-resistant aluminum alloy with non-slip rubber inserts for enhanced grip and stability. [Wide Compatibility]With both 1/4" and 3/8" female threads, this set is compatible with standard tripod and camera mount interfaces, accommodating a wide range of accessories. [Adjustable Clamping Range]The crab clamp features a 38mm opening and is suitable for attaching to objects with diameters ranging from 13mm to 30mm. [Dual Ball Head Design]The magic arm incorporates two ball joints, allowing for 180-degree rotation and instant locking at any position for quick and secure adjustments. [Versatile Attachment Options]When paired with the magic arm, this set can support various accessories such as monitors, LED video lights, and flash units. [Hot Shoe Compatibility]The dual ball head can be directly mounted on DSLR or video camera hot shoes, enhancing stability and versatility in studio settings. Specifications: Model: PU3079R Material: Aluminum alloy (crab clamp) Crab Clamp Opening: 38mm Recommended Clamping Range: 13mm - 30mm diameter Thread Sizes: 1/4" and 3/8" female threads Ball Head Rotation: 180 degrees Mounting Options: Hot shoe adapter, 1/4" screw