SmartPhone holder made of aluminum (seawater resistant)
The clamp can be opened up to approx. 40mm. The smartphone is fixed in the holder (plastic).
The 1" ball clamp allows mounting in any position. All you need to mount a tablet or Reader Bokk is the right bracket. The 1" ball adapters are standardized.
GoPro, Insta360 etc. can also be adapted. With 1" ball arms, the length can be varied, e.g. Selfie Stick or Insta360 tripod