The adapter threads on to axles with a 3/8-26 thread.
Common hubs with this axle are; Shimano Nexus, Shimano Alfine, Shimano Coasting.
Robert Axle Project’s 3/8-26 adapter for Kid Trailers and Cargo Trailers is designed to allow attachment of any hitch-mounted trailer. These Hitch Adapters fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet and cargo trailers such as: Thule, Chariot, Burley, Instep, Carry Freedom, and many more.
If your bike has a 12mm thru axle we make thru axle adapters that you can find by using our Axle Finder here.
Share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure.