The wheels are IFMAR standardised utilizing the wheel hex offset. The tires function countersunk center area that allows the wheel nut to sit deeper within the wheel. The tires are ideal for high-competition racing. They function internal reinforcement ribs to provide stability and resist deformation, yet they are produced from a flexible product to provide durability and withstand impacts. The medial side associated with wheel is aerodynamic for optimum performance. The wheels had been built to provide maximum traction. The tires function a 12mm interior hex. Pair of 2 (1 set)