Rokuhan's briefcase layout kits are now in stock at the Z Scale Track Store. The kits come with a steel side briefcase, formed based, and instructions. The S030 over-under design also include a tunnel, tunnel portals and foam base. The kits do not include track, transformer, or scenery. Rokuhan has released separately an over under track set (R021) that is designed for the briefcases, but can just as easily be used stand alone or as a starting point for a larger track plan. A double track oval set is available now as well. The set is items R062 and has two loops and a series of turnouts connecting them. The inside loop is 195mm and the outside loop is 220mm. Additionally we now have in stock Rokuhan's just released 12' foot containers. Check out all of the offerings at http://www.zscaletrack.com Rob Kluz
