Get Creative with the Mad Mattr The Ultimate Brick Maker X6. Designed for ages 3 years and older, this set includes two 5 oz pouches of Mad Mattr super soft building dough, an X6 brick maker and a safe cutting tool. Dough never dries out, is easy to clean up and is gluten, wheat and casein-free. Make your masterpieces come to life as you mold 6 brick pieces all at the same time. This fun and unique brick maker will make 6 bricks all at the same time, making it easier and faster to build!