2 Pieces Bike Trailer Coupler Set Practical: This bike trailer coupler allows you to securely connect 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 attach to your bike and remain firmly in place during use, ensuring safe and stable towing. Easy Installation: Attach the coupler to your bike frame, then connect the trailer using the included pin—simple and tool-free setup. Wide Compatibility: Fits mountain bikes, folding bikes, and standard bicycles. Compatible with QR axles and solid axles up to 12.2mm. Suitable for use with child trailers, pet trailers, and other bike trailers. Specifications: Material: Steel Load Capacity: 40kg Quantity: 2 Pieces Weight: 252g Dimensions: 7 x 3 x 3.5cm Package Includes: 2 x Bike Couplers