I got this to mount my phone and small camera over my desk for top down shots... first thing I noticed is it feels all metal and heavy duty. The 22 inch length really makes a difference compared to short arms, I can reach the middle of my desk without moving the base...

Setup was simple, clamping on the desk and tighten the main knob... once you lock it, all the ball heads move together which is very convenient. You can get almost any angle you want, overhead, side, even low angle if needed...

The arm is strong for phones, action cams, small LED lights... I tested it with a light mirrorless and it holds but you need to really tighten it. If your desk is not super stable you will see some small vibration at full extension...

Build quality is good, mostly metal with rubber pads inside the clamp... the anti twist pins are nice touch and help keep things from rotating. For heavy DSLR fully extended I would not trust it long term, but for normal creator setup it works fine...

Pros

Long 22 inch reach gives real flexibility
All metal construction feels solid
Multiple 360 degree ball heads easy to adjust
Comes with phone holder and action cam adapter

Cons

At full extension small wobble if desk moves
Clamp needs strong tightening for heavier gear
Not ideal for heavy DSLR setups

Overall: For phone, webcam, action camera or small light this is very good value and practical, just dont expect cinema rig level stability...