2 Pieces Bike Trailer Coupler Set – Connects Bicycle to Stroller or Pet Trailer Practical: This bike trailer coupler allows you to securely attach a stroller or pet trailer to your bicycle. Compact and lightweight design makes it easy to carry and use. Sturdy: Constructed from high-quality steel with a black enamel coating for enhanced durability, resistance to rust, corrosion, and deformation. Safety: Designed to securely lock in place, the coupler ensures a stable connection that will not detach during use, providing reliable riding safety. Easy Installation: Attach the trailer hook to your bike frame, then connect the trailer using the included pin—simple and tool-free setup. Wide Compatibility: Fits mountain bikes, folding bikes, standard bicycles, child trailers, and pet trailers. Compatible with QR axles and solid axles up to 12.2mm, suitable for most family cycling needs. Specifications: Material: Steel Load Capacity: 40kg Quantity: 2 pieces Weight: 252g Dimensions: 7 x 3 x 3.5cm Package Included: 2 x Bike Coupler