With super-strong magnetic force, the Guidecraft PowerClix 18 Piece set features a simple -and-connect construction mechanism for unlimited design possibilities. The colorful translucent plastics, geometric shapes, and extender rods allow for creative engineering. An activity guide gives step-by-step instructions for some construction models while teaching basic science, construction, and engineering. About Guidecraft Guidecraft was founded in 1964 in a small woodshop, producing 10 items. Today, Guidecraft"s line includes over 160 educational toys and furnishings. The company"s size has changed, but their mission remains the same; stay true to the tradition of smart, beautifully crafted wood products, which allow children"s minds and imaginations room to truly wonder and grow. Guidecraft plans to continue far into the future with what they do best, while always giving their loyal customers what they have come to expect: expert quality, excellent service, and an ever-growing collection of creativity-inspiring products for children. Geometric shapes made of colorful translucent plastic. Extender rods provide open-ended constructions. Extra-strong magnetic force supports quick 3D modeling. Recommended for ages 5 years and up.