The tires are IFMAR standardised due to the wheel hex offset. The tires feature countersunk center area allowing the wheel nut to stay much deeper in wheel. The tires are ideal for high-competition competition. They work interior reinforcement ribs to provide you with security and resist deformation. The medial component the wheel is aerodynamic for optimum performance. The tires have been created to offer maximum traction. The tires work a 12mm inside hex. Yellowish color number of 2 (1 set)