The F8-B LED UV Fresnel Black-Light from Zylight is a fixture that emits a narrow band of true 365nm ultraviolet light for dramatic black-light effects. It combines a Zylight Tru365 LED module with the flexibility and control of a focusable glass Fresnel lens. The F8-B delivers black-light LED technology with no lenses to change, no filters to check, and no fixed beam patterns to limit your creativity.