The EXBBT-SOC tool is an external bottom bracket tool for the CNC Rod.External bottom bracket tool. For use with 32 mm CNC Rod adjustable wrench or 3/8 inch socket drive. Compatible with many popular bottom brackets.Weight:227gExternal BB: External bottom bracket tool. For use with 32 mm CNC Rod adjustable wrench or 3/8 inch socket drive. Compatible with many popular bottom brackets.EXTERNAL BB: Campagnolo Chris King FSA Phil Wood Race Face Shimano SRAM Truvativ