Features: Bachmann Trains 18 PC. E-Z TRACK® GRADUATED PIER SET - For Use with HO or On30 Scale E-Z Track. Create an over/under figure “8” layout or similar configurations. Appropriate for higher HO elevations and On30 clearances; 3.875" vertical clearance under the tallest pierFeatures:For use with Steel Alloy and Nickel Silver Bachmann E Z Track®Customize your layoutGradually raises roadbed3.875 inches of vertical clearance under the tallest pierUse With HO and On30 Scale Train Layouts