LED tube light bulbs are fluorescent tube replacements that use LED technology to produce light. They have a similar shape and size to traditional fluorescent tubes, but offer many advantages, such as energy efficiency, longer lifespan, and reduced maintenance costs. LED tube lights are commonly used for general lighting in commercial and industrial settings, such as offices, warehouses, and retail spaces. They are also suitable for use in refrigerated cases and cold storage areas, as they do not produce heat like traditional fluorescent tubes.