What can I say, these tuners really cost their money. Fortunately, the quality is worth the money. The tuners are great. The tuners are great, you can turn them both ways. That's the most important thing, isn't it? Seriously, I'm really pleased. I'd probably be happy with cheaper ones too, but there's really nothing to complain about here. They are very nice, work great, have no play, hold the strings very well and improve the tuning and speed of putting the strings on. I would even say they add a bit of sustain as they are actually quite substantial. But that's an advantage. When you have them on your guitar, you can use the headstock with these keys for self-tuning. I would recommend the product and recommend Thomann to complete your order.