PIKO G-Scale Track Features: -Only pure 100% Virgin Brass Rail - our brass is mined, refined and drawn into rail - never using scrap metal. -PIKO's Virgin Brass rail is a better electrical conductor, is easier to clean, and stays clean longer than rail made from recycled metal. PIKO's pure brass develops a realistic-looking patina outdoors. (Some other brands stay an ugly yellow color and even develop surface rust from the scrap iron, scrap aluminum and many other impurities.) -Code 332 (0.332” high) solid rail. The heavy-duty profile is strong and carries current with minimal voltage loss. (Some other brands hollow out the bottom of the rail or are even made of sheet metal, not solid brass.) -Ties made of ultraviolet-stabilized HDPE (high-density polyethylene) to withstand decades of use outdoors. -Unique track geometry makes complex track plans simple to build with only a few different track sections. -Compatible with most other brands of G-Scale track for unlimited expansion possibilities. (Curved systems are different but the track pieces will join together) -Sturdy push-together rail joiners are factory-formed to fit tightly to the rail profile. -Made in PIKO's own factory in Germany, for the quality you deserve.