Description Features cold-forged and CNC-machined alloy cups, dual-labyrinth bearing covers and precision sealed bearings Designed to fit all 24-millimeter crank spindles and frames with 68 or 73 x BC 1.37-inch bottom bracket shells Compatible with Box Three, Box Four, Shimano HollowTech II, and RaceFace X-Type 3rd party web sales must be an Authorized Dealer TECH SPECSspindle interface24mmshellBSAshell ID33.6mmx24tpiwidth68/73mmcolorblue
