Introduce children to endless building possibilities with the K'NEX Building Fun Tub! This building set from K'NEX comes with 300 different rod and connector pieces, which can be assembled into 3D configurations. Children can follow instructions to create 20 different model ideas including: a Scooter, a Chopper, a Robot, an Excavator, and much more! Help children develop a better understanding of STEAM with easy-to-follow instructions. Ages 7 and up.