The tires are IFMAR standardized aided by the wheel hex offset. The tires work countersunk center area which allows the wheel nut to keep deeper in wheel. The tires are perfect for high-competition battle. They work interior reinforcement ribs to provide security and resist deformation, yet they're typically produced from a flexible item to produce durability and withstand effects. The medial part of wheel is aerodynamic for maximum performance. The tires have been designed to offer maximum traction. The wheels work a 12mm inside hex. Pair of 10 (5 set)