The Park Tool SW-1 Spoke Wrench is a professional-grade workshop tool precision-sized to fit 3.30mm (0.130-inch) square spoke nipples. Unlike the highly common 3.23mm SW-0 (Black), the SW-1 is a specialty tool, primarily intended for unique or historic wheel builds.

Key Features

• Niche Compatibility:
  Sized specifically for 3.30mm wrench flats, this tool is most commonly found on older American-made bicycles, such as vintage Schwinn models, and wheels built with Union or Torrington spokes.
• Industrial Build Quality:
  Manufactured in the USA from precision-stamped, heat-treated steel, and nickel-plated for lifelong corrosion resistance.
• Ergonomic Design:
  The loop handle is slightly curved around the nipple interface, providing high tactile feedback. Additionally, the thick vinyl dip reduces hand strain during extended truing sessions.
• Visual Anchor:
  The distinctive green vinyl handle serves as a quick visual cue on your workbench, helping prevent you from grabbing the wrong size and avoiding accidental rounding.

User Sentiment & Performance

This tool enjoys an impressive 4.8 out of 5-star rating among bike mechanics and hobbyists.

• Zero Slip Fit:
  Users praise its solid lock on historic 3.30mm nipples, ensuring it can break loose seized, rusted vintage spokes without stripping the edges.
• Lightweight Utility:
  Compact and lightweight, yet delivers enough leverage for heavy wheel adjustments, making it a favorite among professionals and enthusiasts.

This specialized tool is a must-have for anyone working on vintage or unique bike wheels, offering durability, precision, and ease of use.