NEEWER Heavy Duty C Clamp with Mounting Column for Light Bracket, Adjustable Metal Desk Clamp with 1/4 3/8 Screw for Ring Lighting, Max Load 44 lb/20kg, St-CCD1

【Adjustable C Desk Clamp】The C clamp can be adjusted using two M8 screws or the clamping wheel to fit various desk thicknesses from 5 to 100 mm (0.2 inch-4 inch). The provided L-shaped hex wrench helps you tighten the M8 screws with maximum security while the star shaped clamping wheel is easy to handle. 【Wide Compatibility】The mounting rod can be attached to the C clamp with three M4 screws and its 1/4" screw is compatible with DSLR cameras, mirrorless cameras, action cameras, LED video lights, ring lights, monolamps and many other devices. Multiple 1/4" and 3/8" threads allow mounting of articulated arms, super clamps, extension rods and other brackets. 【Non-slip Rubber Pads】Soft rubber inner pads increase the friction between the desk and the clamp and protect the desk from scratches and scuffs. 【Durable and Strong Construction】Made of steel, the C-clamp is rigid and solid. It is capable of providing a safe and stable mounting for equipment weighing up to 20kg (44lb). 【Versatile Use】Suitable for product photography, macro photography, video conferencing, live streaming, YouTube videos, remote teaching and much more.