The Park Tool SW7C Triple Spoke Wrench is a precision made spoke key which fits the 3 most popular spoke nipple sizes on the market. This is a fantastic tool for workshops, toolboxes, races, or carrying out on those long day rides. Park Tool SW7C Triple Spoke Wrench Features Handy tool that fits the three most common nipple sizes Size 0 for 3.22 mm / 0.127 inch nipples Size 1 is for 3.3 mm / 0.130 inch nipples Size 2 is for 3.45 mm / 0.136 inch nipples Fantastic tool forworkshops, toolboxes, races, or carrying out on those long day rides