Park Tool SW-1 Spoke Wrench Item # SW-1 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. The SW-1 is sized for .130” (3.30mm) nipples. Description 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 four colors indicating the size at a glance. Park Tool Spoke Wrenches are marked “Park Tool USA.”