Great for those Shorts, Reels and TikTok video clips when you need a steady image or both hands free. All my other designs hold the phone sideways. This one does portrait. There's a version for the iPhone13 Mini and a version that has about 20mm of width adjustment. The adjuster uses an M3 nut and socket head bolt (longest I had was 30mm).
The knob has a taper for a friction fit of the bolt head. Use a nut on the other side to seat the bolt head in the hole.
The author marked this model as their own original creation.