The Original Grover® Sta-Tite™ machine head now available with an 18:1 gear ratio for more precise tuning. With the classic styling and butter bean button of the original Grover® Sta-Tite™ machine heads, these tuners offer the stability of a modern tuner with the vintage look of the originals. Original Sta-Tite™ tuners can be found on countless classic guitars from Martin, Guild, and others dating as far back as the early 1900's. Wood screws included - no bushings required.