Bike Trailer Hitch Coupler Towing Head Linker For Baby Cart/Pet Bicycle Attachment Universal Brand new & high quality Material: alloy Color: black Size: 77mm*55mm*39mm Quantity: 1PC Apply to: Bike Trailer Hitch Coupler for baby cart or pet Package Included: 1*Bike Trailer Hitch Coupler Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!