Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and velvet-smooth tuning comfort. Built with a refined 1:18 gear ratio, this enclosed tuner features high-precision CNC-machined components and high-grade brass posts for maximum tuning stability and long-term durability.
An innovative stepped M6 flanged washer ensures effortless centering and secure installation without requiring stepped headstock drilling. This design eliminates tilting torque and protects both the string post and rear fixing screws from mechanical strain.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 90 shares the exact mounting dimensions of its predecessor, allowing straightforward replacement on standard headstocks without modification.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.8 lb |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
