Product Information Nickel silver track with gray roadbed; 4/card 15″ Radius Curved Track is best used to make railroad curves in tight spots on your railroad layout and appropriate for locomotives and cars with short wheel bases. Four pieces of track make up one-third (120 degrees) of a 30″ diameter circle. WARNING: CHOKING HAZARD – SMALL PARTS! NOT INTENDED FOR CHILDREN UNDER 3. Bachmann’s exclusive E-Z Track system makes set-up quick, easy and fun. Nickel Silver Rail. Gray Roadbed. E-Z Track System –Snaps Together, Stays Together on Floors, Tables and Carpets.