HO scale Ballast Door conversion kit for Roundhouse or Bowser 34' Two Bay Covered Hoppers. Can also be use on other cars such as Herzog. Kit comes with 2 pair of ballast doors and 2 end plates. The end plates are used for the roundhouse cars to cover the gap where the roof would have been. Items are printed in ABS plastic and can be sanded and painted to match your model. THIS ITEM IS SHIPPED VIA USPS, SHIPPING IS $7.50 total for up to 10 kits.