"Best if the vegetables are fat!"
I bought one of these recently & I expect to have hours of fun with it! People who buy one should be aware that if, for instance, you use it on thin carrots, there will be a lot of waste (or veg to use up in other ways) and not a lot of spiral shreds. With a fat courgette the effect is explosive and I got long strips to go with the Chinese noodles we had with our stir-fry! It's perhaps a bit expensive, but I think it's worth it it you want a non-electric, easy-to-use cutter.