IFMAR appropriate, specially-designed 4WD front tires with 12mm inside hex. Perfect fit, and well suited for high-competition competition. The tires are made out of versatile product while however being durable against impacts. The medial part of wheel is aerodynamic for maximum performance. Moderate hardness. Unique features about the wheel are noticeable through inside: reinforcement ribs to really make the tires as stable feasible and eradicate deformation. Band of 5 pairs (10 pcs) the cost on 4 pairs. A fantastic value pack. Fits all XB4