With its Eco halogen lamps, Reptile Systems Eco has developed an innovative and cost-effective way to heat a terrarium. The Basking Spot lamps consist of a holder with a reflector and a replaceable heat source. The holders are equipped with an E27 socket. Reptile Systems Eco Halogen is available in four basking spot configurations with wattages of 25W, 50W, 75W, and 100W respectively. Item numbers 0072600-0072606 correspond to the complete holders (reflector with screw fittings) and one lamp. Item numbers 0072620-0072626 are for two replacement lamps.