If your bike has a 5 mm Quick Release rear axle skewer (pic. 1) or a traditional bike a threaded axle, then everything you need is already supplied in the package for you to be be able to connect a Thule Chariot to your bike.
If your bike has a 12 mm thu-axle (pic. 2) or an internal rear gear hub (pic.3), then an additional Thule adapter will be necessary.
If you have hooded lugs on your drop-outs rather than flat you will require a Thule drop-out spacer accessory to enable the ezHitch cup to clear the bike frame, see quick release adapters.