WINGS & WHEELS - 500 PC/ 30 MODEL BUILDING SET - Introduce your children to endless building possibilities with the K'NEX Wings & Wheels Building Set! This building set from K'NEX comes with 500 different rod and connector pieces, which can be assembled into 3D configurations. Kids can follow instructions to create 30 different model ideas including: a Submarine, a Battleship, a Speedcycle, a Big Rig with Trailer, and much more! Help your kids develop a better understanding of STEAM (science, technology, engineering, arts, and math subjects) with easy-to-follow instructions. Retail Package : 15.75" (W) x 3.5" (D) x 10.5" (H), Weight : 2.25 lb