Lightweight ballast/gravel in 7 colors. Iron Ore, Dark Brown, Brown, Buff, Light Gray, Gray and Cinders. Three grades (fine, medium and coarse). For 32 oz., COVERAGE: N-Scale Approximately 32" to 53.2". HO-Scale Approximately 17.6" to 28.8" and O-Scale Approximately 9.6" to 15.6".