Harley Benton Speedwinder

Bought this only because it can be used with a power tool. And for that its a cheap alternative but not great. It is also quite sturdy built and seem to be of good quality.

The one thing that I don't really like about it is that it it is a bit too small for standard grover kidney tuners (think gibson). So you need to press it on, and because of that it will slip off while you are turning it making it useless as a string winder.
There are better alternatives from Dunlop, Planet waves etc that are just as cheap and work better.

If you are buying this forget all about tunning guitars, I guess it's supposed to work on the basses better