The Hobie Heavy Duty Plug-In Kayak Cart works with any Hobie model kayak and makes it easy to transport your kayak to and from the water. Heavy Duty Plug-in Kayak Cart has a much higher capacity and tires with tread that are more rugged than the standard plug-in cart or the Trax carts. Foam wheel inserts give this cart a high capacity and will never go flat. Plugs into the scupper holes on any Hobie kayak.