Faswin Bicycle Bottom Bracket Tool Shimano Hollowtech II Fits externally ringed bottom brackets Spanner style.Length: Approx. 21cm/8.3 Works with many external bearing crankset bottom brackets, including: Race Face, FSA, SRAM, Truvativ, Chris King Designed specifically for the removal and installation of Bottom brackets Install tool for Shimano Hollowtech 2 and preload tensioning tool