The new 6-Pak by AquaCarts, Inc. is simply one of the best PWC carts on the planet!! The (6) huge 21x12 tires distribute the load of today €™s heavy PWC. The 6-Pak comes standard with the new Heavy Duty Black Series Rims & metallic bushings. This maximizes the flotation to stay on top of sand and other soft surfaces, making the cart easier to pull. Part # 6-PACK