Reptile uvb 10.0 bulb,ideal for all desert dwelling reptiles, such as bearded dragon, tortoise and other lizards. Perfect desert uvb reptile light: 10% UVB and 30% UVA output.No harmful UVC output. Special glass tube made by machine, stable UVB output and fading rate of UVB is low. Our uvb 10.0 reptile light is useful for reptiles to produce Vitamin D3 and calcium E26 socket(standard US size),can be used directly