Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an advanced 1:18 gear ratio. Designed to set the standard for enclosed tuners, it offers flawless performance and exceptional tuning stability.
Every component is precision CNC-machined and surface-treated, featuring high-grade brass string posts engineered for maximum durability and wear-free operation. The self-locking drive and permanent lubrication with Schaller special grease ensure maintenance-free reliability.
Featuring the innovative stepped M6 flanged washer, this tuner allows effortless installation and solid centering without requiring a stepped headstock bore. It shares identical mounting dimensions with its predecessor model for simple drop-in replacement.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | High-grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |




















