Clamp Lamp includes an in-line on/off switch on cord for your convenience and a heavy-gauge black/white aluminum dome that glows in the dark. Designed for reptile incandescent light or heat bulbs. Clamp is rubber coated for better grip and protection of clamped surfaces. For use above screen-top terrariums or cages only. Do not use inside the terrarium. 6 ft. UL-Listed cord.