PowerClix® Frames 26 Piece Set are square, triangle, rectangle, rod and X-shapes made out of sturdy, translucent plastic. The framing of these pieces are geared with super strong magnets, enabling the pieces to easily click and connect with each other. Children can engineer these shapes to create 2D and 3D wire-frame models. Each piece adds fun to the learning experience with their different colors. The building is limitless and will inspire children to tackle the basics of science, technology and mathematics. PowerClix® Frames 26 Piece Set is a great addition to a STEM curriculum or any classroom. The shipping weight for this set is 2 pounds. Manufacturer recommended age is 5 years or older. PowerClix® Frames 26 Piece Set is compatible with PowerClix® Solids and PowerClix® Organics sets.