Tolerates high temperatures from reptile heat or light bulbs Tough ceramic sockets wont break down in heat stress Reflective interior, durable powder coated black exterior Good looks, great long-term comfort for reptile pets R-Zillas premium incandescent light fixtures are designed to deliver years of heat or light to reptile terrariums. Each of three sizes is topped with a ceramic socket to withstand constant heat sockets for the 8.5" and 10" fixtures accept bulbs to 250 watts. The black exterior finish is powder coated and fired for added luster and long life. An in-line on/off switch is positioned near the fixture for easy use. Add an R-Zilla Power Controller to automatically match on/off times to your pets life cycle (sold separately.) Each Black Dome is packaged in an attention-getting nested box for easier shelf storage and maximized merchandizing appeal. This is an offering for multi quantity bundle - 2 count