Got an idea or application for WheelEEZ® PU balloon wheels but not sure how to attach them? We’ve got the solution with our best selling Wheel Axle Kits (WAK). These wheel/axle kits, with Polyurethane Balloon Wheels, axle and various mounting hardware, make moving/rolling equipment, generators, pumps, storage and tool boxes, large coolers much easier! The PU Balloon wheels glide over the sand, turf, rocks and other challenging terrain with ease! They are also great on hard surface terrains like streets and sidewalks. Kits install easily. Perfect for Do-It-Yourself cart projects and conversions.