With this adapter set, almost any bike can become Tacx® trainer-ready. Use it to put a racing bike with disc brakes or a mountain bike with axle skewer in a Tacx direct drive trainer. Both axles are supplied with an adapter set so you can select the right combination for your bike. These axles are only suitable for the Tacx direct drives. Other axles are available for the classic trainers, and they replace the standard axle skewer.