Gotoh Premiums are as good as they get. Smooth, reliable, accurate. You can pay a lot more for boutique tuners, but these will perform just as good. I was initially afraid the 10.2mm diameter would be too wide to fit in a preexisting guitar, but they fit right in when you push them in with a bit of force. I realize that the reason the bearing is wider than 10mm is so that it grips onto the wood to allow for smooth, "frictionless" performance. The matte gold finish looks better in person and the aluminum rollers look real sleek and should last a lifetime. You can adjust the resistance of the tuners with the included wrench.
Reviewed by: Sheldon from Toronto, Ontario on 3/21/2019