27 individual concrete slabs each with a surface area of 60 x 30 mm to construct a concrete roadway with a length of more than 80 cm For the designing of curves junctions railroad overpasses etc more than 40 smaller partial trapezoidal pieces are included The material is easy to handle Apply concrete slabs to your diorama base mark out the lanes with some colour or alternatively add some grass material & dandelions to finish an old concrete road