MUQZI Bicycle Trailer Hitch Adapter 12mm Thru Axle 160-178mm for Kid Pet and Cargo Trailers

How to choose the correct size?1.Measure the fork width (outer) (Thru-axle for 160-178mm width) 2.Check whether the thread diameter is 12mm 3.Measure the thread PitchMUQZI Thru Axle Trailer Hitch AdapterThis thru-axle adapter allows you to attach a trailer hitch to your bike and is compatible with Instep, Schwinn, Allen Sports, Thule Chariot, Burley, Hamax, Retrospec, and many other bike trailer brands. Adjustable Length: The thru-axle fits a range of 160–178mm and comes with spacers that can shorten it, allowing to easily adjust the size ，compatibility with more bike models.You need a standard 5mm hex wrench to do the installing work