Steel alloy track with black roadbed; 1/card In addition to many other uses, the 30 Degree Crossing is the centerpiece of a basicFigure 8″ track configuration. To make a Figure 8, you also need 21 pieces of 18″ Radius Curved Track (Steel Alloy) and 1 piece 18″ Radius Curved Terminal Rerailer (Steel Alloy). 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. Steel Alloy rail. Black roadbed. E-Z Track System – Snaps Together, Stays Together on Floors, Tables and Carpets.