D'Addario PWAT-EXT-1 Single In-Line Machine Head 6-In-Line (Black)

D'Addario's Auto-Trim tuning machines, engineered by Ned Steinberger, redefine the restringing process by combining precision tuning hardware with an integrated string-cutting mechanism. The PWAT-EXT-1BK six-in-line configuration suits guitars with all tuning machines on a single headstock side, eliminating the need for separate string clippers during maintenance. Built from die-cast housing and precision-machined components, these tuners deliver stability even under aggressive playing or tremolo use.

The 18:1 gear ratio bevel and worm construction ensures fine tuning resolution and holding accuracy across string changes. Individual string clamps secure each string without requiring multiple wraps around the post–a significant workflow improvement during frequent restringing. The auto-trim feature automatically removes excess string as tension increases, streamlining the entire setup process. Available in black, chrome, and gold finishes, the hardware integrates into most six-in-line headstock designs whilst maintaining traditional aesthetics.

Features

• Automatic string trimming during restringing; eliminates need for separate clippers.
• 18:1 gear ratio for precision tuning and enhanced tuning stability.
• Individual string clamps reduce wrapping time and improve intonation consistency.
• Die-cast housing and precision-machined gears withstand aggressive playing.
• Six in-line configuration for standard guitar headstock layouts.
• Available finishes: black, chrome, and gold.
• Ned Steinberger design philosophy; professional-grade construction.
• Model PWAT-EXT-1BK; includes all mounting hardware and six tuners.