This is an optional Yokomo Narrow Clamp Wheel Hub Set, and is intended for use with the Yokomo BD7 1/10 touring car. These narrow hexes are 4mm thick, and not only provide a more precise wheel mount, they also allow you to fine tune the track width of the wheels using the tread spacers.
Royal mail at £3.50, or Express at £6.95.
Full details at checkout.
Some items cannot be sent via Royal Mail due to their restrictions.