Burley trailer thru axel. I had this one on my old bike which I sold. M12 x 1.75 142-148mm long.
Burley Coho XC Bike Trailer 5mm Skewer For Rim Brake Bikes - Multiple Sizes
Burley Coho XC Detachable Cargo Trailer Black With 2 Sizes Of Axel
Burley Coho XC Bike Trailer Thru Axel Kit For Disc Brake Bikes - Multiple Sizes
Burley Bike Trailer Pannier Rack - For Coho XC Cargo Bike Trailer - Brand New
Burley Bike Trailer Front Yoke Cable Repair Kit - For Coho XC Cargo Trailer
Burley Bike Trailer Kickstand Foot for the Coho XC Cargo Trailer
