Let young science and engineering fans create their own deep-sea adventures with this LEGO® Technic™ Deep-Sea Research Submarine toy. Measurements – A 413-piece set with a model measuring over 6 in. (15 cm) high, 9.5 in. (25 cm) long and 6 in. (15 cm) wide. This creative building set includes lots of realistic features like the rotating propellers and grabbing arm to help kids explore how submarines work. The transparent cockpit opens to give access to the seat and controls. The set comes with a barrel accessory, which kids can pick up using the submarine’s extending grabbing arm