Lightkiwi T8 LED Tube Light 18w 4ft Pure White Replacement with Fluorescent Tube Manufactured with machinery NOT by hand soldering components Uses Quality CREE, Epistar or Nichia brand LED components Warrantied for 50,000 hours or 5 years Reduces your electrical consumption by 60% compared to a t12 bulb Reduces lost man-hours spent changing out light bulbs