WELCOME TO THE SHOP Titanker Upgraded Bike Trailer Hitch for Schwinn, Bike Trailer Coupler Bike Trailer Attachment for Instep, Bike Trailer Adapter for Cargo Trailer - 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 on the bicycle trailer hitch, so whatever your bike trailer coupler holes are vertical or horizontal, it works for you perfectly - Easy installation: We enclosed the great instruction with detailed pictures and descriptions in the package for your installation reference - Family fun: With an additional trailer coupler attachment, both Mom and Dad's bikes can be outfitted to tow the kids trailer, your kids will enjoy the bike ride. A bonus, when your kids gets tired from riding, you can strap him next to your bike - Precise design: The diameter of the hole attach to 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 to your trailers is 1 inch Payments We accept the following payment methods PayPal Please pay as soon as possible after winning an auction, this will allow for quicker shipping times! Returns We do not accept returns. Shipping Shipment processing time All orders are processed within 2-3 business days. Orders are not shipped or delivered on weekends or holidays. If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone. Shipping rates & delivery estimates Shipping charges for your order will be calculated and displayed at checkout.