Bachmann 22" Radius Curve E-Z TRACK (4) HOFEATURES Includes 4 pieces of curved track that make up 1/4 of a 22" radius circle. Black plastic with steel alloy rails. Operates on floors, tables, and carpets. No screws, nails, or special tools needed for assembly. Snaps together and stays together. Quick, easy assembly. Carded packaging. INCLUDES One Package of 4 Pieces of 22" Radius Curved E-Z Track. REQUIREMENTS HO Scale Train Equipment. Adult Supervision. SPECIFICATIONS Scale: HO (1:87) Length: 8-1/2" (216mm) Width: 1-3/4" (45mm) Height: 1/2" (13mm)