Seems functional.

I've been playing-... Attempting drums for a short amount of time, and double bass is something I aspire to not be garbage at, and for that I need a double pedal... But i'm cheap and not very good so in the budget section I looked, and I found this beauty.

It seems sturdy enough to not fall apart like my love life, comes with a drumkey for assembly and a nice little carry bag thing. I tried playing with the tension a little bit but didn't really notice any difference, so I stopped caring and moved on.

Works like any other pedal, foot down, beater forward. I can't say how well it will do in a live setting with extremely fast use, but if you're doing a live show you're probably not using something cheap for practice.

All in all, practice? Go for it. Live? Maybe get something higher budget.