The Bachmann HO Scale E-Z Track Figure 8 Track Pack makes expanding the oval or circle included in your train set fast and fun. With this set you can create a giant 76" x 39" over-under figure-8 with 21 pieces of 18" radius curved track, a 30-degree crossing and an 18" radius terminal track included in this pack. This set includes steel-alloy track with molded black roadbed, but it can easily be mixed with gray-roadbed nickel silver E-Z Track too when you decide to add onto your layout. The Figure 8 Track Pack is compatible with the entire line of Bachmann HO Scale E-Z Track.