This is a package of two McCoy MC9 Power Plugs. The Power Plug is a high performance glow plug intended for R/C nitro car use. It features a welded, heavy gauge platinum element that resists oxidation and heat deformation and remains securely in place despite intense vibration. This is the same plug used for the last two seasons to win nearly every major gas racing event held in the United States. Put this winning performance in your R/C vehicle.