Fits most bike. Before your purchase, please notice the size of the shaft diameter, please check your trailer whether fits it.Made of heavy- duty steel with a welded hitch arm at an approximate 45- degree angle for attachment position for many of bicycle trailers.Universal Bike Bicycle Trailer Coupler Attachment, Bike Trailer Hitch Linker Connector, Cycling Adapter Accessories for Child/ Pet Cargo Bike Trailers.With the complete hitch arm and hitch connector, easy to install without other tools required. Each bike trailer coupler has equipped with a connect pin, the pins can hardly get opened, also once you install them up, they will not easily fall off, can ensure your babies .Bike Trailer Coupler Hitch is a practical bike trailer hitch for towing solutions, stretches easily to allow user to lay down a bike while the trailer remains upright