6 Heavy Duty Dock Wheels, $15 each (at least 1/3-1/4 the price from new on Amazon or any dock company web site). I used them on a rolling cart in my garage and don't need them any longer. Included are two axels and end stops, 1 1/2 inch PVC pipe. You can use any length of pipe you want for your project. Tires are 24 inches diameter and 7 inches wide. Hole for axle is 2 inches which fits the outside diameter of the PVC perfectly. Price on Amazon and dock building web sites new averages $78 per tire. You can have these for $15 each. Make a beach cart for your kayak or canoe, push cart for the kids, dock wheels under your dock. These are located at Lake Wenatchee in the garage at my cabin. Want them brought to the Seattle area, let me know! Email me and we can schedule a time to get together to check them out. Thanks!!