Titanker Upgraded Bike Trailer Hitch for Schwinn, Bike Trailer Coupler Bike Trailer Attachment for Instep, Bike Trailer Adapter for Cargo Trailer (1 PC-Black)

Multi-compatible bike trailer coupler: It fits almost all bikes and all Schwinn and InStep brand trailers (such as all series AA, AB, AC AD, AE, AG, AH, AI)
Portable design: There are vertical and horizontal holes at the bicycle trailer hitch, so no matter what your bike trailer coupler holes are vertical or horizontal, it really works for you perfectly
Easy installation: We enclosed the great instruction with detailed pictures and descriptions within the package on your installation reference
Circle of relatives fun: With an additional trailer coupler attachment, both Mom and Dad’s bikes may also be outfitted to tow the kids trailer, your kids will benefit from the bike ride. A bonus, when your kids gets tired from riding, you’ll be able to strap him next in your bike
Precise design: The diameter of the hole attach in your bike is 1/2 inches & the outer diameter of the part that attaches to the axle is 1 inch. The diameter of the hole attach in your trailers is 1 inch