Robert Axle Project Bike Trailer Thru-Axle for 142 and 148 mm Over Locknut Dimensions

No thru-axle like any other: the Kid Trailer Axle by the Robert Axle ProjectThe Robert Axle for bicycle trailers replaces your original thru-axle, so you can attach a child, pet or luggage trailer to your bike with 12 mm over locknut dimension. Kid trailer