suitable for 1 Set Bike Trailer Hitch Universal Bike Trailer Baby/Pet Hitch Linker Connector Bicycle Rear Rack A-YI WU CHUN HUI This item is a practical bike trailer hitch for towing solutions. for sturdy use. With the complete hitch arm and hitch connector, easy to install without other tools required. The hitch adpator can be compatible with universal bicycles and electric bikes. Works with quick release or nutted wheels. Does not work with disc brakes. colour:Black + silver Material:Plastic + copper size:23x3.5x3.5cm Package Contents: 1x Bicycle trailer hook Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.