The Alley Intersections Pack is part of the Castle Builder System. It is made of "Dwarvenite". This item was initially available as an add-on to a pledge level during the Castle Builder System Kickstarter. It was not advertised during the Kickstarter campaign but was made available during the final order. The item comes in both painted and unpainted versions. The sections are compatible with the streets from the City Builder System series.
The Alley Intersections Pack comes with these 12 pieces:
(2) 4x4 Alley T-Intersection
(2) 4x4 Alley Crossroads
(4) 2x4 Alley Dead End
(4) 2x4 Straight Alley