This pavement set contains four 4.25cm x 30cm pieces. This is made from 3mm MDF. I recommend gluing it down to a 6mm piece of MDF that is 30cm x 30cm for best effect for a modular setup (or larger if you are will to fix the positions of the various pieces). 4 pieces is enough to make 2 straight road section like in picture.
Please note that the buildings in the images are not my products. These photos were taken by a customer and sent to me.