The tires are IFMAR standardised utilising the wheel hex offset. The tires work countersunk center area allowing the wheel nut to stay further within the wheel. The tires are very well fitted to high-competition battle. They work internal reinforcement ribs presenting security and resist deformation, yet they're made from a flexible product to make durability and withstand impacts. The medial part connected with wheel is aerodynamic for optimum performance. The wheels was indeed intended to offer maximum traction. The tires work a 12mm inside hex. Pair of 2 (1 set)