Park Tool Double-Ended Spoke Wrench Description: The SW-9 is a double-ended spoke wrench with a comfortable handle for truing wheels with limited access to spoke nipples. Precision machined in the USA from nickel plated and vinyl dipped for long service shop life. Features: Ideal for wheel truing high spoke count wheels or while using an anti-rotation spoke holder Features 3.23mm and 3.45mm openings Made in the USA and built for shop life Smaller End: Sized for spoke nipples with 3.23mm wrench flats, often found on higher-end bikes Equivalent to Park Tool SW-0 Larger End: Sized for spoke nipples with 3.45mm wrench flats, often found on department store bikes and low-to-midrange bikes Equivalent to Park Tool SW-2