2 Trolleys in one if you have two different boats.For Sea Kayaks + Canadian Canoes and S.O.T. Kayaks.Our Mark 6 Expedition and Adventure Trolley is two Trolleys in one! As a result our renowned Mark 6 Expedition which is for Sea Kayaks comes in addition with a centre extension section and extra longer axle to adapt it from a Sea Kayak Trolley to a wider trolley for Canadian Canoes and a Sit-on-Top Kayaks , perfect if you have other boats.All our trolleys are made from the same robust, similarly lightweight materials, with a thick dense foam to protect your kayak or canoe. They will take all kinds of abuse on long rough portages, sand and ferry ramps with fully laden kayaks without any problems.Comes complete as the KCS-MARK 6 EXPEDITION trolley plus 1 x longer axle + 1 x centre extension frame and a KCS buckle protected strap.