The Multifunctional Universal Metal Smartphone Holder uses a spring-loaded clamp to support smartphones ranging from 2.3 to 3.4' wide and up to 17.5 oz. The clamp also uses a precision-fit hinge to smoothly tilt 180° or rotate 360°. A 1/4'-20 thread at its base can be used to connect the holder to a tripod, or use the cold shoe base to attach it to the top of a DSLR and use your phone as an external monitor. Additional cold shoe mounts and 1/4'-20 threads may be used to connect other peripherals, including a smartphone cage, rig, selfie stick, LED light, external mic, and more. The inside wall of the phone holder is padded with rubber, which helps support and secure your phone without scratching it.