Compatible Building Bricks - Big Bag of 500 Assorted Glow in the Dark and Neon Bricks - Guaranteed Tight Fit: 500 pc Big Bag of Bricks Clear Blocks with 27 Roof Pieces- This 500 pc set is the perfect addition to your building bricks collection. They are guaranteed tight fit with all major brick building brands and come in a unique glow in the dark neon colors. Get all the bricks you want with less fillers at an affordable price!