Features: Made of hard anodized- aluminum alloy, it won'for t be easy to suffer corrosion or breakage. An adtional 3/8 screw hole is expanded. More devices can be connected. 360 rotating if with the magic arm, the direction of the bilateral for head can be adjustable arbitrarily Equipped with 1/4'' screw and 3/8'' screw, suitable for monitors, fill lights , cameras, microphones and other equipment. Load bearing up to 1.5kg, can firmly clamped. Very useful hand tool for photography accessaries Specifications: Item: C-type Crab Clamp Material: Aluminum Alloy Types: WN40 / TM2 Size: approx 53x55mm/2.08x2.16(WN40) / 73.05mm/2.87 (TM2) Note: Size for manual measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 PC x C-type Crab Clamp