Description The Robert Axle Kid Trailer Axle KID213.N – Naild Bikes will allow you to attach a hitch-mounted trailer to your bike. This 12mm thru axle from Robert Axle will fit any trailer that has two wheels & a single point of attachment. Including all the two-wheeled child, pet and cargo trailers from Thule, Chariot, Burley, Instep, Carry Freedom & more. Robert Axle want you to share your love of cycling with your kids. Their axle’s will allow quick & secure attachment of your trailer to your favourite bike. Your stock thru-axle is not strong enough to haul your precious cargo! Robert Axle’s are 3 to 4 times stronger than the stock axle that came with your bike. Their stainless steel axle ends will provide a safe and secure attachment point of the hitch to the axle. The axle is quick to install and remove with a common 5mm hex key. Please note: In addition to our 12mm Kid Trailer Axle required to attach the trailer to your bike, we encourage you to consider replacing your stock axle with our Lighting Bolt-on Axle, which replaces your NAILD thru axle system with a simpler, lower profile and easier to use thru axle when you aren’t using your trailer. With purchase of both our Kid Trailer Axle and Lighting Bolt-on Axle you can quickly switch back and forth between axles using the hex wrenches commonly found on your multi-tool. Kid Trailer Axle KID213.N – Naild Bikes features: This Kid Trailer axle is specific to bikes that have the NAILD thru axle system Includes a M12 x 1.0 threaded nut to replace the NAILD nut that came with your bike. This axle is compatible with Burley, Carry Freedom, Chariot/Thule, Croozer, Instep, and many more hitch style trailers. The axle shaft and axle end are precision CNC machined. The axle shaft is 7075 aluminium and hard black anodized for rugged durability. The axle end is stainless steel, which allow for mounting of the hitch provided with your trailer. The threads are M10x1 (metric). Hardware for attachment of the hitch is included; the hitch is not. Designed, built and quality tested in the USA. Proven around the world. Not sure how this axle system works? We can help! We stock these axle’s in our Bicycle Repair Shop in Richmond & can help you figure out what you need.