Magene Thru Axle Adapter For T100/200 Bike TrainerA thru axle adapter for a bike trainer is an accessory that allows bikes with thru axle hubs to be mounted on a bike trainer, which typically uses a quick release skewer system. These adapters essentially replace the bike's thru axle and provide a secure mounting point for the trainer. They are crucial because thru axles, common on many modern bikes, are wider and require a different mounting method than the older quick release skewers. Specs: