Home Amazon Goldbox K?NEX Education ? STEM Explorations: Swing Ride Building Set ? 486 Pieces... Amazon Goldbox K?NEX Education ? STEM Explorations: Swing Ride Building Set ? 486 Pieces ? Ages 8+ Engineering Education Toy By ARCOM - 28 December 2017 199 0 SHARE Facebook Twitter Go to the deal page: K?NEX Education ? STEM Explorations: Swing Ride Building Set ? 486 Pieces ? Ages 8+ Engineering Education Toy List Price: $39.99 Deal Price: $28.49 You Save: $11.50 (29%) KNEX Education Explorations Building Engineering Expires Jan 10, 2018