Park Tool SW-0 Spoke Wrench Description: This is the Park Tool SW-0 Spoke Wrench. Professional quality, precision-sized spoke wrenches are hardened and nickel-plated for long service. Park Tool Spoke Wrenches are vinyl coated in one of five colors indicating the size at a glance. Features: SW-0 is sized for 0.127" (3.23mm) nipples and fits the common Edco, Wheelsmith, and DT square nipples Vinyl coated in one of 5 colors to help determine sizing at a glance Professional-quality made with nickel plating for longevity