2 pieces coupling for Qeridoo bicycle trailer trailer coupling piece coupling Features: Practical: Our bike trailer coupler allows you to connect a stroller or pet trailer to your bike. Small and compact, easy to carry and use. Sturdy: Made of high quality steel and coated with black enamel, it is more stable, not easy to deform, rust and corrosion resistant. Safety: Our bike hooks can be fixed well and will not fall off automatically to ensure riding safety. Easy Installation: First attach the trailer hook to your bike, then connect the bike to the trailer with the connecting pin and you"re done! Wide Use: Suitable for mountain bikes, folding bikes, regular bikes, child trailers, pet trailers, etc. It supports QR axle and solid axle up to 12.2mm, which can meet the needs of most families. Specifications: Material: Steel Load: 40kg Quantity: 2pcs Weight: 252g Size: 7 x 3 x 3.5cm Package Included: 2 x Bike Coupler