Vertical, 3 Vertical, 3 Treble and 3 Bass, Set of 6. The same excellent features as the original 97 series, now with an 18:1 gear ratio! The Original Grover® Sta-Tite™ machine head. The classic styling of the Sta-Tite™ returns with the Grover® name. The butter bean button identifies this as the original. A 18:1 gear ratio provides precise tuning. Available in chrome or nickel finish with a horizontal or vertical string post in 3+3 configuration. Wood screws, washers, and bushings included.