Robert Axle Project Kid Trailer Adapter - Fits Bikemotion/Rad Power/Mahle Ebike MotorsThese hitch adapters are the perfect solution if youre looking to attach a trailer to a threaded axle, but dont have enough thread length to safely secure your precious cargo. These adapters are robust stainless steel with enough surface area to create a robust connection with your dropout. Included are a nylock nut and stainless washers to keep things snug. The adapters are available in a variety of sizes to fit most common axle sizes. Designed,