Features:Aluminum kickstands, very sturdy and durable.Large pneumatic rubber tyres roll smoothly across sand, gravel, and road.The top parts of the kickstands are inserted into the kayak bottom scuppers and the EVA cushions help to protect kayak whilst being transported.The width of the unique crossbar is adjustable with a screw to accommodate different placement of scuppers.The bottom kickstands are very easy to install into the tyres with two buttons.A great trolley for you to transport your kayak.