Does what it says at a competitive price
Holds your chainsaw so that it can only swivel up and down, making log sawing a safer exercise.
Assembly instructions aren't entirely clear, but if you work through them carefully it becomes clear how the unit is meant to fit together. Clamping the chainsaw in the right position can be a bit fiddly, as you have to hold the saw in the right place while you get the clamp nice and tight - might be best to have one person holding the saw in position while a second person tightens the clamp.
Once assembled the unit feels nice and solid.
Having said all of that, it does exactly what I needed it to do and does it at a completitive price.