Attachment connector for bicycle trailer Coupler for type I trolleys Description: Material: The bicycle trailer hitch is made of iron, rust-resistant and difficult to damage. Secure and reliable: The mounting design ensures that the trailer mounting screws do not loosen or open on their own, ensuring maximum driving pleasure. Then you can complete the installation of this accessory for your bicycle trailer. Wide application: the bicycle trailer hitch allows you to connect the trailer to the bike, allows you to transport children safely and comfortably. Fits most trailers, dog trailers, pet strollers, etc. Portable: This sturdy bicycle connector is small and can easily fit in your bag during outdoor activities. Specification: Material: Iron Size: about 1,3 cm x 2,5 cm / 0,51 inch x 0,98 inch The package includes: can choose 4 snap rings 2 traction heads 1 Multifunctional snowflake Or 2 traction heads 2 snap rings 1 Multifunctional snowflake Or 1 traction heads 1 Multifunctional snowflake Or 1 traction heads 4 snap rings