Well when I first saw this online I thought it would be cool to have but when I order and receive it in the mail it doesn't even work. I'm not sure if I just got a faulty one or they're all like this but mine would only tighten and when I tried to loosen with it, it would just keep spinning and spinning. So it's all up to your choice if you want to risk it.
Bottom Line No, I would not recommend this to a friend
This is an ok drum key for regular drums, but it doesn't do very well with marching percussion. I have had two or three of them, actually I usually end up buying them every season. On high tension drums, they have a tendency to strip out. the teeth in the ratchet aren't strong enough. they are good for concert percussion and drumsets, but so is your cheap old run of the mill drum key.