IFMAR appropriate size, specially-designed 2WD/4WD straight back tires with 12mm inside hex. The guts countersunk area was redesigned to put the wheel nut further. Precision fit, well suited for high-competition battle. Created from versatile, durable product to withstand outcomes. The interior the wheel is aerodynamic for maximum performance. Moderate hardness. Unique shows about the wheel are noticeable from inside: reinforcement ribs to make the tires as stable to and expel deformation. Number of 5 pairs (10 pcs) the buying price of 4 pairs. Outstanding value pack. Fits all XB2 & XB4
