The Lezyne EXBBT-CLT tool is a two-way external bottom bracket & cassette lock ring for the CNC Rod. Two-Way integrated external bottom bracket & cassette lock ring tool. For use with 32 mm CNC Rod or an adjustable wrench. Compatible with many popular external bottom brackets & cassette lock rings. EXTERNAL BB: Campagnolo, Chris King, FSA, Phil Wood, Race Face, Shimano, SRAM, Truvativ CASETTE LOCK RING: Shimano, SRAM, Sun Race, Sun Tour, Chris King