Largest K'NEX ball contraption - Guinness World Records

Published on Apr 8, 2016 Guinness World Records

"The largest K'NEX ball contraption has 126,285 pieces and was built by Austin Granger (USA), as demonstrated in Saint Anthony, Minnesota, USA, on 13 March 2016. Read the full story here: http://bit.ly/GWR-Knex"