Good Performance: The bicycle trailer hitch can connect the child trailer or pet trailer to the bicycle perfectly, the practical tool allows you to go out with children or go out with pets more easily. Durable Material: The bicycle trailer coupler is made of heavy duty steel, it is of high quality, it has the good workmanship and the structure is solid, it is durable and practical, it has a long service life, you can use it for a long time. Convenient Design: The bicycle trailer adapter has the practical and safe design, there is the fixing hook to provide the perfect protection , when installed, they are not easy to fall off, they can ensure the safety of children or pets well. Easy Installation: You just need to remove the nut on the rear wheel bolt of the bicycle, then connect the steel bicycle trailer hitch to the bicycle, finally connect the connector of the trailer with the attachment hook. Wide Uses: The maximum load of the bicycle coupler attachment is 40 kg. It is suitable for QR axles and solid axles up to 12.2 mm / 0.5 inch. It fits most bikes and trailers. For example, folding bike, mountain bike, road bike, child trailer, animal trailer and etc.