All of the Concrete Tie Double Track pieces are 100% compatible with our regular double and single track Unitrack pieces and bridges and can be added into your existing Unitrack layouts. The Double Track curved pieces feature "Superelevated Curves" which means that they are tilted to create a realistic banked shape. This does mean that "Easement Curves" are required to connect the superelevated curves to regular flat track (either double track or standard Kato Unitrack).
 
2 pieces of track per pack