Blue Spotted Wire Cage Clamp Lamp for use with terrariums and reptiles, amphibians, small animals, birds, and farm animals Blue Spotted Wire Cage Clamp Lamp for use with terrariums and reptiles, amphibians, small animals, birds, and farm animals Ideal for ceramic heat emitters, basking lamps, 10.0 UVB bulbs 150 Watt maximum bulb size. Use with basking bulbs, 10.0 UVB bulbs, ceramic heat emitters & mercury vapor lamps that are 150 Watts or less Prevents heat buildup behind lamps for added safety. UL listed ceramic socket Convenient on/off switch and easy to install swivel head clamp. Avoid overheating your terrarium and pets by using lamps, bulbs, and heat emitters correctly size for your environment. Other products to consider: Blue Spotted Under The Tank Terrarim Heat Pad, Aquarium Masters Professional Digital Thermometer