A device comprised of components that enable a bicycle trailer’s wheels to rotate freely and securely. This setup typically includes a solid rod or spindle that spans the width of the trailer, connecting the wheels and bearing the weight of the trailer’s load. As an illustrative example, a broken or damaged component necessitates replacement with a compatible set to ensure safe and efficient transport.
The integrity of this assembly is paramount for safe and reliable bicycle towing. Functionality ensures the secure attachment and smooth rotation of the trailer’s wheels, directly influencing stability and handling. Its historical development reflects advancements in materials science and engineering, optimizing load capacity and durability.