DESC: Easily Attach your InSTEP or Schwinn Bike Trailer to a Second Bike With this bike trailer coupler you can easily attach your InSTEP or Schwinn bike trailer to a second bike - weights 4oz. Fits All InStep and Schwinn Bike Trailer Models Availability Usually ships in 3-5 business days. Allow an additional 1-5 business days to arrive. View Estimated Time In Transit Map Price includes shipping. Shipping to International or APO/FPO Addresses NOT Available. FREE SHIPPING is only available in the 48 Contiguous United States. InSTEP Bike Trailer Accessories - InSTEP & Schwinn Bike Trailer Coupler Kit Model SA074