Our IQ Test Cubes were created to help both children and adults practice and prepare for nonverbal IQ tests. The cubes are made of plastic using a 3D printer. The set includes 9 cubes in red/blue and white. Each cube is 2.5cm, making the set suitable for use both at home and on the go. You can use IQ Test Cubes to practice for the WAIS-IV and WISC-V assessments.