XTREM BOT | Spider Bot | 48003253Dive into STEM Learning and Master Robotics and build this awesome spider with realistic movements and test your mechanical skills. Enter the world of construction and mechanical engineering with the Spider Bot Build & Play STEM set. Here's what it offers Over 100 assembly pieces for building a robotic spider Encourages STEM learning, logical thinking, and problem solving Realistic unidirectional movements: forward and backward Six articulated legs