Hykolity 8FT T8 LED Tube Light 50W (120W Equivalent) Shop Lights, 5500LM, Works WITH or without a Ballast, 5000K Daylight White, Single Pin, Fluorescent Tubes Replacement Lighting Fixtures 4 Pack Energy Saving - Energy Savings of up to 75% over our product's lifespan. Rated over 50,000 hours of use, that's about 23 years @ 6 hours/ day. Easy Installation - Our LED Tube Lights only work with Electronic Ballast, not traditional Inductive Ballast. Wide Application - Ideal to Installed in offices, schools, hospitals, hotels, workshops, etc. Also suitable for indoor garden lighting. Rebate Eligible - Our LED Tube Lights are DLC-Qualified and thus eligible for State and Nationwide Rebate programs. 5 Year Warranty - Hykolity's 5-Year Warranty means we got you covered! Contact us if any issue arises.