FloraCraft Styrofoam Kits, Haunted Project Bricks Black 300 1.5" x 5/8" x 5/8" Project Bricks Enhance problem solving skills and fine motor abilities as you design and build your projects from the ground up You can create an infinite variety of authentic-looking buildings, from classic landmarks to concrete skyscrapers The bricks can be cut, pinched or rolled Kit contains genuine Styrofoam , the brand trusted by educators for over 50 years