Fat Brain Toys Joinks Innovative construction set made of wooden dowels and flexible, silicone connectors; connectors bend with ease for expanding possibilities; features suction cups for attaching structures to any smooth, non-porous surface Build fun forms, geometric shapes, molecular models, or any other structure your imagination can conjure; kids and chemists build side-by-side! Creative fun for all ages 3+; dowels made of smooth, natural wood; connectors made of 100% silicone rubber; fully safety tested; suction cup connectors leave no marks or residue Strengthens creativity, fine motor skills, visual-spatial proficiency, critical thinking, planning skills; inspires imaginative thinking, innovative design Includes 76 pieces  37 dowels in 3 sizes, 39 connectors in 6 colors and styles ranging from end pieces to 1 connecting prong to 5 connecting prongs; made in China Fine Motor Skills Spatial Reasoning Creativity Planning Pattern Recognition Innovation Inventiveness 100% Silicone Connectors Fully Safety Tested Frustration-Free Packaging