Hykolity T8 T10 T12 LED Tube Light 4FT, 18W (40W Equivalent) Shop Lights, 2000 Lumens, Works WITH a Ballast, 4000K Neutral White, Frosted Glass Cover, Fluorescent Tubes Replacement 8 Pack ENERGY SAVING - Save up to 55% on your electricity Bill! Replace 40W fluorescent tubes by 18W T8 LED Tube. COMPATIBLE - Our LED Tube Light only can work with Electronic Ballast. Inductive-ballast (traditional, old style, not LED) not compatible. WIDE APPLICATION - Preferred by most of contractors, electricians and wholesalers. Installed in office buildings, schools, hospitals, hotels, workshop and parking lots etc. EASY INSTALLATION - No need to remove the electronic ballast, just plug it in!