4x BLACK alloy 12mm machined hex hubs (6mm thick) by Yeah Racing

WA-037BK - Finally the hexes that will never lose their pins! • 4x BLACK anodized machined aluminum 12mm hex hub, 6mm thickness, with screws to stop the hexes (included). This series of different thickness hexes lets the pilot fine tune the width of the car and the use of special rims on their models.