Contains 2 replacement bulbs for FSL BL T5 F8W fly swatter, length 302 mm, diameter 16 mm. 【Function】The main wavelength is 365 nm and is used to attract small pests such as house flies, mosquitoes, moths, etc., with good trapping effect and energy saving. 【Compatibility】Replacement bulbs for Aspectek, EazyZap, Fly-Bye, Plus zap, Flymatic, Xterminate, Vermatic, etc. Suitable for most 8W / 16W insect repellents. 【Safety】UV-A rays are harmless to humans and pets and are widely used in living rooms, bathrooms, etc. dining rooms, kitchens, food storage rooms, hallways in front of doors, etc.