Used once. Releasing as I have no further use for it. Manufacturer's suggested retail price: 5,410 yen Compatible BB size: 46.4mm (notch diameter) / 48-50mm (outer diameter) Number of notches: 16 Mainly compatible with: FSA(R) MegaEvo(R), Wheels ManufacturingTM T47, Wheels ManufacturingTM PF30 *Not compatible with Hope TM BSA30. Drive size: 9.5mm square (3/8" sq) Material: Aluminum *Please comment if you have any questions. *There may be scratches from storage. *This is not a new, unused item.