Help eliminate creaking bottom noises using this internally threaded bottom bracket Choose either the 30mm spindle specific model or the 24mm version with adapter to run GXP 24/22mm spindle cranks Features a small groove that can fit an additional oring for loose fit frames, available separately. Not necessary for correct fitments Angular contact stainless steel bearings Enduro TorqTite wrenches (2) are required for installation, sold separately, AB9008 Third party online sales strictly prohibited by manufacturer