The Robert Axle Project Kid Axle: Length 217 or 229mm with 1.75mm Thread stock Wheel bearing - Dimensions: 8

Wheel bearing - Dimensions: 8 X 22 X 7 mm - CEMA SRC ceramic or chrome steel bearing - Double sealed - Colour: silver-black

This preload ring is used to adjust bearing preload on M-pulse front hubs

It all fits together in a compact tool that easily fits in any pocket or pack

On the other hand

The Robert Axle Project Kid Axle: Length 217 or 229mm with 1.75mm Thread stock Wheel bearing - Dimensions: 812mm Thru Axles for Kid Trailers & Cargo Trailers Kid trailers provide a great way to share your adventures with those you love. With our 12mm Thru Axles for Kid Trailers, you can attach a Burley Trailer, Thule Trailer or any brand of trailer to any bike with a rear 12mm thru axle mountain, road, fat, cross, e bike and everything in between. Our Kid Trailer Axles are designed for maximum strength and ease of use in attaching your trailer. The Robert