The tires are IFMAR standardised because of the wheel hex offset. The tires work countersunk center area permits the wheel nut to hold deeper into the wheel. The tires are specially suitable to high-competition competition. It works interior reinforcement ribs available security and resist deformation. The medial component the wheel is aerodynamic for maximum performance. The tires was definitely built to offer maximum traction. The tires work a 12mm inside hex. Yellowish color number of 10 (5 set)