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
FollowMe Adapter Vollachse 3/8 x 26G kaufen
Trailer Hitch Adapter 3/8-26 - The Robert Axle Project
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Burley Hitch Adapter
Thule-Chariot, Shimano axle adapter for bicycle clutches
DRAW-TITE, 58552
FOLLOW ME ADAPTER axle extension nut 3 8 x 26 G £11.12 - PicClick UK
Robert Axle Hitch Adapter- 26 x 3/8 Axles – Kids Bike Trailers
Robert Axle Project QR Hitch Adapter 5mm QR - QR1906
NICEDACK Unisex Bicycle Axle Adapter for 3/8 Inch x26 Full Axle
Instep Bike Trailer Coupler Bike Trailer Hitch Connector
Bike Trailer Hitch Bike Trailer Hitch Connector Coupler Bicycle
12000LBS Electric Winch 12V Steel Cable Off-road ATV UTV Truck