Woodland Scenics Forest Green Bushes 353 cubic cm (21.6 cubic in) Particle size approximately 7.9mm - 12.7 mm (5/16 in - 1/2 in) Models medium to high ground cover, such as bushes, shrubs and trees, and is the perfect product to make medium to large trees. Use for any scale. Six realistic colorfast colors. Attach to Tree Armatures with Hob-e-Tac®. Use Scenic Glue™ to attach to layout. Purchase the Scenery Manual for additional information about how to use the Landscape System.