Klutz-Circuit Clay Kit. Learning electricity is easy when you make clay creations glow! Use a special conductive and insulating clay to make a sculpture, add LEDs, attach a battery pack and watch your clay circuit light up! This package contains one book, four colors of reusable conductive clay, white insulating clay, twenty LEDs, one battery pack and fifty-three paper pieces. Conforms to ASTM D 4236. Softcover, 52 pages. Published Year: 2017. ISBN 978-1-338- 10636-7. Imported.