Your uke deserves the best: Grover Sta-Tite 9NB ukulele tuning machines heads. The 9NBs are beautiful tuners with classic black round buttons, and give you sure-fire, silky-smooth tuning. The heavily plated nickel finish contrasts the brass of the gears, giving off a cool vintage vibe. The 9NB has a one-piece back plate, brass gear, die cast button, and knurled bushings. It's a classic Grover design. If you're considering upgrading your ukulele with new tuners, Grover Sta-Tite 9NB tuning machines heads are the way to go.