SUNGOOYUE Bicycle Trailer Coupler Attachment, Heavy Duty Bike Trailer Coupler Hitch Attachment for Baby Trailers and Most Bicycles

• A bike trailer coupler is a part that you can connect your trailer to your bike allowing you to transport your little ones in safety and comfort.
• Equipped with a connect pin, the coupler attachment can hardly get opened, also once you install them up, they will not easily fall off, which can ensure your baby's safety.
• This bike trailer coupler hitch attachment is suitable for baby trailers and most bicycles.
• Easy to install, only you need to do is fix them with a screw nut on the bike, and insert the trailer attachment, put the pin on.
• The bike trailer coupler is made of good quality aluminum alloy, and sturdy, equipped with accurate welding technology, can bear heavy duty.

Specification: Item Type: Bike Trailer Coupler Material: Aluminum Alloy Bicycle Fixing Hole of the Rear Axle Diameter: Approx. 11mm / 0.4in Trailer Fixed Hole Diameter: Approx. 7mm / 0.3in Recessed Area Screw Nut Fixed in Diameter: Approx. 21mm / 0.8in Base Plate Length: Approx. 55mm / 2.2in Application: For baby trailers and most bicycles Packing List: 1 x Connect Pin 1 x Coupler Note: 1. Please allow 1‑2mm/ 0.04‑0.08in error due to manual measurement.2. Please measure your trailer coupler and bike mount size before order this adapter.