Feature: 1. Sturdy Material: Made of high strength steel, offering superior hardness. The finish of this adapter attachment is treated with spray paint for rusting resistant, ensuring the connecting rod won't easily deform or break, prolonging its lifespan. 2. Convenient Design: Add more fun into your ride. With this trailer coupler adapter, you can bring along your pets, children, or suitcases on your journey, making traveling more convenient and enjoyable. 3. Easy to Install: Remove the black iron piece, pass the axle through the round hole of the iron piece, lock it on the rear wheel quick release device, and finally wrap the on the chain and stick the buckle at the D position of the buckle. 4. Enhanced Performance: The trailer coupler connector attachment allows for steady and secure attachment of the trailer hitch to your bike, providing stable performance and enduring everyday wear and tear. 5. Stylish Look: Neat and generous design that blends well with your bike's aesthetics. The towing hitch coupler adapter not only provides practical functionality but also adds a stylish touch to your biking gear. Specification: Item Type:Bike Trailer Hitch Coupler Adapter Attachment Material: Steel Fixed Axle Hole Diameter: Approx. 10.3mm / 0.4in Package List: 1 x Trailer Hitch Coupler Adapter