23-179 Unitrack Opposite Platforms B (Pre-Built)The long time sellers, one sided platforms, are now renewed. Not only do they look realistic but also they comply with the Unitrack standards, making them very easy to use. From these items on, contents of sets and specifications of part of products will alter. The stickers will be updated to reflect widened eras and regions FEATURES The texture of asphalt is reproduced on the upper surface of platforms Staircase to the underground passage can be