The Cycleops 20/24 inch Wheel Adapter lets you run 20” & 24” wheel bikes on a range of the adult sized Cycleops Trainers. Our friends over at Triathlon Trust use these adaptors when they run Triathlon taster days & challenges for primary school kids. They are also handy if you want to run a recumbent on a turbo. Features means that you can use kids, bmx or recumbent bikes with your trainer. Raises the resistance unit up to wheel height for smaller size wheels. For use with Cycleops wind, mag, magneto, fluid 2 & powersync trainers. Not compatible with Cycleops magnus trainer.