J-15 Mini Bridge Piers for Plarail. This is a set of 40 pieces. 39 are yellow, and 1 is gray. They are one-quarter the height of the block piers. They can be used in combination with sloped curved rails and block piers. Stacking 4 mini bridge piers will result in the same height as a block pier. These were used by a child. For those who need a large quantity, please consider them (*^^*) #Plarail #MiniBridgePiers