The tires are IFMAR standardised with the wheel hex offset. The tires feature countersunk center area allowing the wheel nut to remain deeper in wheel. The tires are ideal for high-competition competition. They function interior reinforcement ribs to provide protection and resist deformation. The medial part the wheel is aerodynamic for optimum performance. The tires had been built to offer maximum traction. The tires work a 12mm inside hex. Yellowish color group of 2 (1 set)