The tires are IFMAR standardised with all the wheel hex offset. The tires work countersunk center area permitting the wheel nut to keep more deeply inside wheel. The tires are perfect for high-competition competition. They function interior reinforcement ribs to provide security and resist deformation, yet they are produced from a flexible product to make durability and withstand impacts. The medial component about the wheel is aerodynamic for optimum performance. The tires was indeed built to provide maximum traction. The tires work a 12mm interior hex. Band of 2 (1 set)