Rounded precast concrete elements for lining a tunnel floor in a tunnel construction project. Lining segments are positioned using a vacuum system and serve as a route for the tunnel boring machine trailing units and for laying rails in railway tunnels at a later point.

This building kit contains: 24 single parts in 1 color and 1 construction instruction.

Faller and Ajckids advise to use the FALLER EXPERT plastic glue.