The tires are IFMAR standardised with all the wheel hex offset. The tires function countersunk center area allowing the wheel nut to stay deeper inside wheel. The tires are perfect for high-competition race. They feature interior reinforcement ribs to offer stability and resist deformation, yet they're created from a flexible product to supply durability and withstand impacts. The medial side of this wheel is aerodynamic for optimum performance. The wheels were made to provide maximum traction. The tires function a 12mm internal hex. Group of 2 (1 pair)