Tube Lights, 18 Feet, Plug In, UL Listed Indoor or Outdoor, White 18 ft. of LED lights inside a clear, 20 ft. flexible tube Lead Length: 21 in. and Tail Length: 0 in with Bulb Spacing:1 in. End-to-End Connectable: Yes, up to 12 strands Grade: UL listed indoor/outdoor use Power (strand): 120 volts