connector,Bike Trailer Hitch Bicycle Stainless Steel 12.2MM-Hitch Coupler Black & White

The bike trailer hitch coupler attachment made of steel with black enamel coating, made from heavy duty iron material, strong and durable, corrosion resistant, hard to damage.

The bike coupler attachment is suitable for QR axles and solid axles up to 12.2 mm/ 0.5 inch, proper for most bicycles and children trailers.

Just to make sure it doesn't spin while tightening, and throw an Allen wrench through the pin hole and hold in position while tightening.

This sturdy bike coupler attachment is not large, you can easily carry it in your bag for outdoor activities, connect your kids trailer with your bike, you can mount it on bike rear axle.