20 parts: Includes four squares, four cone parts, four cylinder parts (arches) and eight circle parts (quadrants). Educational: Create different structures to help develop your child's mathematical vocabulary. Construction set: Get a Magformers Curve 20 set. Ideas: Various 3D models can be made such as open and closed cylinders, cones and more! Structures: Use your imagination to make a range of shapes in either 2D or 3D forms. Magformers Curve 20 Shapes Set | Living Social