Let your children be introduced to endless building possibilities with the KNEX Jumbo Jet Building Set! This building set from KNEX comes with 57 different rod and connector pieces, which can be assembled into 3D configurations. Kids can start with a jumbo jet build to learn how KNEX parts click together and then move on to the creations of their dreams. Easy-to-follow building instructions come along with the KNEX Jumbo Jet Building Set.