Design & Drill BrightWorks - with Sound ActivationLight up creativity with the flip of a switch! Budding designers can follow one of 12 included patterns or create their own custom, glow in the dark creations. Just insert one of the translucent bolts, use the real working, kid friendly power drill to drill it in, and watch as your dynamic creation glows from the inside! Psst They're Learning! Perfect for STEM learning Advances kids' hand eye coordination, matching, patterning, and problem solving