Quick Switch: Decrease time needed to switch your trailer to a new bike easily. Just connect with hitch ball trailer, you can change quickly. ATTACHMENT LINK: With this attached trailer hitch attachment, mom and dad's bikes can be connected to the children's trailer. In addition, when your child is tired of riding, you can tie it next to the bicycle. DURABLE: It is made of durable materials, resistant to deformation and not easily damaged, and resistant to wear . Durable, it is a reliable part, you can use it to replace worn or damaged parts. QUALITY: The bicycle trailer hook connector attachment is made of steel and heavy iron material. It is durable, corrosion resistant, and not easy to be damaged. SAFETY ENSURE: Each bicycle trailer hitch has equipped with a connecting pin, the pins can hardly open, also once you put them on. install, they will not easily fall off, can ensure your babies safety.