EUNORAU M12 Thru Axle Trailer Hitch Adapter vs Anley Bike Trailer Coupler

These are not competing versions of the same part. The EUNORAU M12 is a thru-axle adapter for mid-drive ebikes with 12mm thru axles, sized to specific dropout widths. The Anley coupler is a generic clamp-style hitch for bikes with standard rear axles and common trailer arms. Buy the EUNORAU if your ebike has a thru axle and you tow a single-wheel cargo trailer. Buy the Anley if you have a conventional axle and a kid, pet or cargo trailer with a standard coupler. Owners rate the Anley well for fit and finish; the EUNORAU is a niche steel part with no broad review base.

• Choose the EUNORAU M12 adapter if your mid-drive ebike has a 12mm thru axle and you need to attach a single-wheel cargo trailer.
• Choose the Anley coupler if your bike has a standard rear axle and you tow a kid, pet or cargo trailer with a common clamp-style hitch.