This is a pack of two optional Team Associated +1mm Offset Wheel Hexes. Optional width wheel hexes alter the vehicle's handling by changing steering feel and vehicle roll stiffness. Wheel hex width is a great way to add or reduce effective steering and also gain or reduce roll stiffness. This item fits the following: Team Associated RC8B3 Team Associated RC8B3.1 Team Associated RC8B3.1e Team Associated RC8B3e