Quality model supplies as used by Russ, a professional modeller with decades of experience.
Ballast, Brown, Coarse 21.6"3 353cm3
Ballast, Gray, Fine 21.6"3 353cm3
Ballast, Cinders, Fine 21.6"3 353cm3
Ballast, Gray Blend, Medium 46.4"3 760cm3
Ballast, Iron Ore, Fine 23.4 in3 383 cm3