The Grover Sta-Tite ukulele tuners provide precise, reliable tuning for your ukulele. With an 18:1 gear ratio, you'll enjoy smooth, accurate tuning. The open gears and butterbean buttons give these tuners a classic look, while the 22/64" post hole and 25.2 mm overall post length to ensure a secure fit. Designed to drop in as a replacement for the U99-18 series, these tuners make upgrading your ukulele easy. You'll appreciate how the precise tuning and stylish design of the Grover Sta-Tite tuners enhance the tone and playability of your ukulele.