These are great machines- I've used them on everything from cheapo knock-offs to genuine USA guitars, and they're terrifically smooth. These have SPLIT Shafts exactly like vintage fender® tuners! This is a great way to get to vintage look with modern stability and smoothness...
I can find no functional difference between these excellent tuners and the far more expensive "branded" models, right down to the vintage correct ribbing and button shape- So why pay up $50 for a set of black tuning machines?