Review on Enhanced Bike Trailer Coupler Attachment with Angled Elbow for Instep & Schwinn Bike Trailers by Titanker by Raymond Iglesias

Fits mine larger through the axle, was easy to assemble and seemed very strong and well protected from rust. Trailer InStep "Quick N EZ". I don't know the series as there is nothing on the hitch (maybe the sticker fell off). But if anyone still has an old Quick N EZ trailer. carefully! Our trailer fits perfectly with old hitches and is very easy to slide in and out. I've tried WD-40 with it, I've tried wiggling and prying, I've tried pounding. I could probably ride it in, but that defeats the purpose of the quick release feature of attaching it to our other bikes.