Features:  Ideal company for magic arms, DSLR rig, studio products incuding on-camera flash/LED lights, LCD monitor, follow focus and other accessories. Super clamping strength and stability Strong construction, made of stainless steel and aluminum alloy Provide both 1/4" and 3/8" screw Big load of up to 2kg with mini dimensions Descriptions: The Super Clamp is made of aluminum and metal, Super clamping strength and stability. Easily and quickly catch the object. Easy to fix video light, LCD screen and other accessories. Specification: Material: Aluminum Alloy Thread: one 1/4"-20 and one 3/8" Minimum opening diameter :10mm Maximum opening diameter: 41mm Weight: 110g Package included: 1x Crab Pliers Clip Note: 1.Please allow 1-3mm errors due to manual measurement. 2.Due to the difference between different monitors,there are color differences,please take the real product as the standard!