What kind of robots can you dream up? Kids build their own twisting, turning STEM creations with mix-and-match pieces sized just right for little hands. Add squiggly green legs, a few eyes, or a propeller that really spins! An Activity Guide with recommended builds helps kids develop essential STEM skills, from critical thinking and early engineering to following directions. The pieces work with all 1-2-3 Build It! sets for even crazier creations! Size: 25.4 x 23.4 x 10.9 cm. Ages 2+.