Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine features an advanced 1:18 gear ratio that delivers exceptional precision and smooth, reliable tuning performance. Built with CNC-machined components and high-grade brass string posts, it ensures maximum tuning stability, wear resistance, and sensitive adjustments.
Equipped with the innovative Schaller stepped flanged washer, this tuner allows effortless installation while precisely centering the string post to eliminate tilting torque. The permanently lubricated, sealed housing provides maintenance-free operation and long-lasting durability.
Designed with standard mounting dimensions identical to its predecessor, the M6 90 enables direct replacement on compatible guitars without body modifications.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| String Post Material | High-Grade Brass |
| Product Weight | 0.13 lb |




















