This is a Garmin Tacx direct drive 12mm axle w/ adapters designed to mount bikes w/ 12mm rear thru axles on Tacx direct drive trainers. Replaces standard thru axles. Features: Required to mount thru axle bikes on Garmin Tacx direct drive trainers Includes adapters or 142mm and 148mm rear spacing Specifications: Axle Size: 12mm x 142/148mm
