(Compatibility): Scissor arm stand with 1/4 standard screw thread and adjustable 2.2-3.8 inch width phone holder, specially designed for Logitech Webcam C922x C922 C930e C930 C920 C615, Brio 4K, Microsoft LifeCam Studio, All Cellphones and other devices with 1/4’ threaded hole (Heavy Duty Carry): Made out of high quality steel frame with super-strong springs, very sturdy and durable, designed for supporting devices up to 3.3 pounds / 1.5KG (Stability and Safety): Dual suspension springs on each boom arm, very stable for using your device without shake and prevent device from suddenly dropping (Adjustability): Folding type, convenient to carry around, and scissor arms with adjustable screws allow you adjust the suitable angle & height to show perfect image (Improvement): Anti-scratch padded zinc alloy desk clamp mount fit up to 2.1’ desktop, Anti-skidding & anti-dropping webcam connecting pole with 1/4’ thread, Adjustable phone holder for all cellphones, Extend arm up to 28’ / 70c