This is a KATO elevated track set. One of the curved tracks is chipped (see photo 2), and some have stickers and writing on the back (see photo 3). There are no problems with use, but cleaning the rails is recommended to ensure good electrical conductivity. The types and quantities are listed below. Straight track S248 x 19 Curved track R315-45 x 10 Piers: Staircase 6, 15mm 5, 25mm 6, 35mm 5, 45mm 3, 50mm 11 Please note that this is sold as-is, and no returns or exchanges will be accepted.