K'NEX Education Intro to Structures: Bridges STEM Building Set - 207 Pieces

K'NEX Education Amusement Park Experience STEM Set 2272 Pieces - See Desc.

K’Nex Education Stem Explorations Swing Ride Building Set w/Motor Brand New

K'NEX Education STEM Explorations Vehicles 131 Pieces, 2 Motors, 8+

K'nex 79320 STEM Explorations Education Vehicles Building Set 131pcs Ages 8+ New

K'nex 78610 STEM Education Machines: Levers & Pulleys Building Set 178pcs New

K'NEX Education Stem Building Solution 78630 (OPEN BOX)

K'NEX 13419 100% Complete Knex 70 Model Building Toy Set Discontinued