Product Description Bachmann Trains 14 PC. E-Z TRACK GRADUATED PIER SET - HO Scale. Create an over/under figure “8” layout or similar configurations. Compatible with steel alloy and nickel silver E-Z Track (3 1/8" vertical clearance under the tallest pier) From the Manufacturer Graduated Pier Set for use with Bachmann Snap-Fit E-Z Track. Use With All Bachmann E-Z Track. Gradually Raises Roadbed. Molded In Plastic.