Fulight Easy-Installing T8 LED Tube Light, 24-Inch 10-Watt 6000K, F17T8, F18T8, F20T10, F20T12/CW, Double-End Powered Frosted Cover Fluorescent Replacement Bulb FAST COMBINED SHIPPING: Usually shipped within 24hrs & Arrive within 1-4 business days! Fixture Rewiring is Easy but REQUIRED: No more electronic ballast! **Installation Manual attached as the 2nd photo at the left upper corner of this product page!** Comfortable Instant-On Daylight White 6000K with Color Rendering Index &gt; 80% Thick Aluminum Spine Design for SUPERIOR Heat Dissipation Capability: to guarantee safety and long lifetime. (&gt;50,000hrs lifetime & 3-year Warranty) GREEN ECO FRIENDLY + SIGNIFICANT ENERGY SAVING: no flickering, no UV light, no buzzing ballast, no hazardous materials + Saving ~50% electricity