E-Thru axle skewers allow you to put your bike in the Tacx® trainer. Axles are only compatible with Tacx classic trainers. Separate axles are available for direct drive trainers, and they replace the standard axle skewer.
T1707 E-Thrutrainer axle M12x1, with metric fine thread - suitable for hubs with axle skewer attachment 142 × 12 mm: various DT Swiss and Shimano types.