Bicycle Trailer Hitch Coupler vs EUNORAU M12 Trailer Hitch Adapter

Buy the CrafTecker coupler if you tow a trailer behind a standard bike or a hub-motor e-bike with a normal axle nut or quick release. Buy the EUNORAU M12 adapter only if you own a Eunorau hub-motor e-bike with an M12 axle nut and want to pull the EUNORAU one-wheel cargo trailer. The CrafTecker is the universal part: steel arm plus nylon strap, fits nutted and quick-release axles, and installs without tools. The EUNORAU is a narrow-fit steel adapter built around one thread pitch and one trailer. Neither works with disc brakes on the CrafTecker side, and the EUNORAU is limited to the listed Eunorau models.

• Choose the CrafTecker coupler if you need a general-purpose trailer hitch for a regular bike or a hub-motor e-bike with a standard axle nut or quick release.
• Choose the EUNORAU M12 adapter if you ride a Eunorau hub-motor e-bike with an M12 nut and tow the EUNORAU one-wheel cargo trailer.