Feature: 1. Large Opening Degree: This super clamp can be opened by 50mm and can be used for 90% of daily catheters, with a more diverse range of application scenarios. This super clamp is a very practical photography accessory and can be quickly fixed to cylindrical and square object surfaces, such as photography lamp holders, tripods, guide rails, stage brackets, tabletops, crane clamps, etc. 2. Stronger Scalability: Reserve multiple 1/4 inch screw holes and 1 3/8 inch screw hole for stronger scalability. The side has a cold shoe mount design, which can be used with a phone clip as a monitor. 3. Aluminum Alloy Material: The surface of the super clamp camera clamp is sandblasted and anodized, with a delicate texture and a soft touch. 4. Embedded Rubber Gaskets Inside: There are 2 embedded rubber gaskets inside, which are stable and anti slip, making the lock more secure. 5. Flat Wrench for Easy Locking: The flat wrench is more convenient to lock, with even force and lighter locking. Specification: Item Type: Super Clamp Camera Clamp Material: Aluminum Alloy, Rubber Weight: Approx. 102g / 3.6oz Interface Type: 1/4 Inch Screw Hole, 3/8 Inch Screw Hole, Cold Shoe Mount Clamp Opening Capacity: Approx. 50mm / 1.97in Package List: 1 x Metal Clamp