WSB1389 Color: Gray Features: -Ballast. -Rock used to hold real railroad ties in place. -Great for modeling this effect and making gravel roads on layout. -Mix and match for a realistic effect. -Light weight and easy to use. -Attach with Scenic Cement. Product Type: -Art Kits. Country of Manufacture: -United States. Dimensions: Overall Product Weight: -1.04 lbs.