Features: Mainly made of high strength aluminum alloy, very solid and durable, with smooth matte black finish. With a cold shoe socket on top, you can mount a LED video light, a microphone or other devices with shoe mount on the phone holder, make your phone photography more perfect. The clamping distance can be easily adjusted from 63mm to 90mm by twisting the adjusting knob on the phone holder. The clamping part adopts rubber pad design, effectively protecting your phone from being scratched. With 1/4 screw holes on the bottom, can work with tripod, tabletop tripod, ball head, drone, selfie stick, video slider, etc. A 1/4 screw hole is designed on the back, making it possible switching from phone horizontal shooting to vertical shooting.