Park Tool 1-pin/3-pin Lockring Wrench
Park Tool 1-pin/3-pin Lockring Wrench, Engage lock rings for installation or removal with the Park Tool 1-pin/3-pin Lockring Wrench. This handy compact tool features two sides one with a single pin for single-notched lock rings and the second with three pins for 3-notched lock rings with a maximum outside diameter of 46mm. It is designed for bottom bracket lock rings specifically not for fixed-gear lock rings.