Zoo Med Desert Lighting Combo comes with a Mini Deep Dome Lamp Fixture and Basking Spot Lamp. Best used with Reptile Terrariums and Zoo Med's Reptile Lamp Stand for maximum safety. The Mini Deep Dome Lamp Fixture measures 5 1/2 inches and the polished aluminum dome increases light and heat output up to 30%. The Basking Spot Lamp is great for all types of reptiles and uses a patented computer designed "double reflector" that focuses 35% more light/heat in the beam than other reflector bulbs. Comes with Mini Deep Dome Lamp Fixture and Basking Spot Lamp Deep Dome extends beyond the face of the lamp, preventing the lamp from extending outside the face of the dome. Ceramic socket: for use with lamps up to 100 watts. Polished aluminum dome for maximum light and heat output.