BACHMANN STEEL ALLOY E-Z TRACK EXPANDERSET W/12 PCS ASSTD., HO SCALESTEEL ALLOY EXPANDER SET (HO SCALE) With the E Z Track Expander Set, you can add to the track included with our train sets or create new configurations of turnouts, branchlines, and double track mainlines on your existing railroad. Also, a handy track plan manual included with the Expander Set contains ideas to inspire railroad tycoons of all ages. Offered in steel alloy (with black roadbed) or nickel silver (with gray roadbed) versions. Features