Brillihood T8 LED Shop Light Tube, 4FT, 18w (40W equivalent), Dual-End Powered, 6000K Cool White, 2000 Lumens, Clear Cover Lens, T8 T10 T12 Fluorescent Bulbs Replacement, (Pack of 10) ENERGY SAVING: Save up to 55% on your electricity bill by replacing 40W fluorescent tubes with 18W LED. PRO-ENVIRONMENT: No hazardous materials, no radiation, offer pollution-free, high quality light source. UNIVERSAL COMPATIBLE: 110-277V AC, g13 4' foot double end tube. EASY INSTALLATION: Existing ballast needs to be removed or by-passed. International standard shape for T8 tube light. easily fitted Instead of traditional fluorescent tube lamps. LONG LIFESPAN: &gt; 50,000 hours,5 years warranty. Contact us for an easy and fast replacement.