2 pieces bike trailer coupling Practical: This bike trailer coupler allows you to connect a stroller or pet trailer to your bicycle. Compact and lightweight for easy transport and use. Sturdy: Constructed from high-quality steel with a black enamel coating for enhanced durability, resistance to rust and corrosion, and reduced risk of deformation. Safe: Designed to securely attach to your bike and remain firmly in place during use, helping to ensure safe riding. Easy Installation: Attach the coupler to your bike, then connect the trailer using the included pin—no tools required. 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 and pet trailers. Specifications: Material: Steel Load Capacity: 40kg Quantity: 2 pieces Weight: 252g Dimensions: 7 x 3 x 3.5cm Package Includes: 2 x Bike Coupler