Terrain Maker® is a geomorphic wargaming terrain system based on double-density Styrofoam hexes measuring four inches from side to side (Terrain Maker hexes are 4" from the middle of one side, through the center of the hex, to the middle of the opposite side.)The thickness of the hex determines the type of terrain it models. Per pack: TM3 contains 12 hexes (each 1-inch thick), enough tree material to make 16 trees, and instructions. This is the standard hill or level one Terrain Maker hex. Base TM3 hexes on the TM1 1/2-inch thick hexes—sold separately—then model rolling hills and elevations with gentle slopes. **Please note - Due to the high costs of shipping Terrain Maker outside of the contiguous USA, the standard 20% of the merchandise total that we charge for international shipping is not sufficient. If you live outside of the contiguous USA and are interested in purchasing Terrain Maker, please contact GHQ at [email protected] and tell us where you live and how much Terrain Maker you are interested in purchasing. Thank you!