The tires are IFMAR standardised with all the current wheel hex offset. The tires function countersunk center area that allows the wheel nut to sit much deeper in the wheel. The wheels are ideal for high-competition racing. They function interior reinforcement ribs to provide protection and resist deformation. The medial side in regards to the wheel is aerodynamic for maximum performance. The tires had been designed to provide maximum traction. The wheels work a 12mm inside hex. Yellowish color band of 10 (5 set)