The XLC TO-S05 Bottom Bracket Wrench is compatible with 24mm open-end wrenches or a 1 ½ inch ratchet and is suitable for removing, replacing, and maintaining Shimano bottom brackets and components according to the ISIS standard.XLC TO-S05 Bottom Bracket Socket for Shimano ISIS Bottom Brackets and ComponentsCompatible with 24mm open-end wrench or a 1 ½ inch ratchetXLC Article number: 2503600800 EAN code: 4032191656366 Retail packaging: Yes