Granite master casting. Suitable for all multi-scale applications. Excellent for steep mountain cuts and blasted rock cliffs. Measures approx. 6" H x 7" W x 1" thick. MASTER CASTINGS are high density polyurethane reproductions of actual rock formations from around the U.S.A. Great care was taken to hold the most intricate details. These lightweight castings may be easily carved, painted and mounted directly on your layout with minimal effort. They may also be used as 'Make-A-Mold' masters for making highly detailed latex molds.