Expandagon Building Geometry Toy Set Hoberman‎ STEM

This fun set expands and contracts as a fun geometric building set. Use these with a set you already own to expand the fun. This set includes: 8 x-linkages 10 expanda-triangles 20 connector tubes 6 expanda-squares (connected in pairs in photos) 12 swivel hubs 2 instruction books Fragrance free and non-smoking household. Follow me for more styles and sizes similar to this. Fast shipping. Many other holiday items are being listed daily. 1lb 3oz