Robert Axle Project Kid Trailer 12mm Thru Axle, Length: 172 or178mm Thread: 1.5mm

If you're reading this you probably already know what it does...and it does it perfectly on my bike with a Thule Chariot hitch.It bolted right on in place of my existing thru axle. It tightens with a 5mm allen wrench and then the trailer hitch is secured with either an 11/16 or 17mm wrench/socket. Total install time was probably 35 seconds with proper tools in hand.