Built to fit most smartphones 2.5 to 3.4" wide, the Professional Universal Mobile Phone Cage from SmallRig secures your phone with a spring loaded clamp, which helps make it simple to insert and remove your phone. Also featured are two cold shoe mounts for attaching an LED light, microphone, tripod, or other accessory, plus multiple 1/4"-20 threaded holes. The 1/4"-20 holes with notches can be used to mount a SmallRig Mini Safety NATO Rail for Mobile Phone Cage, while the 1/4"-20 thread holes on the side can be used to attach the SmallRig Mobile Phone Cable Clamp, which helps to ensure a tight fit with a Lightning cable, USB Type-C cable, adapter, or SmallRig's Aluminum Side Handle for Smartphone Cage for handheld shooting. Included is 37mm lens thread mount for attaching 37mm lenses and a Moment lens mount for attaching Moment lenses. Two holes on the bottom can be used to secure a lanyard for easier carrying, and built-in rubber pads help protect your phone from scratches.