EUNORAU M12 to M10 Trailer Hitch Adapter vs Jingzan M10 x 1.0 Trailer Hitch Adapter

These are not interchangeable parts, so the decision is about your axle, not preference. The EUNORAU adapter is a female M12 x P1.25 to male M10 converter for rear hub motor ebikes, sized for Eunorau's hunting trailer and listed for the Defender-S, UHVO, Max-Cargo and G30 Cargo. The Jingzan is a two-pack of M10 x 1.0 adapters with flange nuts for nutted solid rear axles on ordinary bikes. Buy the one that matches your axle thread; the other will not fit.

• Choose the EUNORAU adapter if your ebike has an M12 x P1.25 rear hub motor axle and you want to pull an Eunorau or other M10-mounted trailer.
• Choose the Jingzan 2-pack if your bike has a nutted solid rear axle with M10 x 1.0 threads and you need a spare adapter or two bikes covered.