Use Ballast and Coal for any scale to model realistic railroad track, gravel roads, crushed rock and stones, hopper loads and coal piles. Available in several colors and sizes, you can mix and match for a superior realistic effect. Ballast and Coal are lightweight and easy to use. Realistically model railroad track, crushed rock and stones. Easy to use and colorfast. For any scale. ALLERGY CAUTION: Ballast contains tree nut by-products. Bag – 21.6 in3 (353 cm3)