300 warm white LED's mounted on a 5 metre (16ft 4") flexible strip of tape that can be cut down to any length you chose. These are DIY LEDs that need their wires extending. 
 
I first fitted one of these in a narrowboat & a 5m length down each side produced as much light as the older, much less energy efficient lights that were fitted throughout the roof.

Because the light these produce is spread out, it isn't dazzling like many modern lights and the tiny amount of power they consume makes them super energy efficient.
 
They will run on any 12v DC supply, ie most Vehicles, Caravans, Boats etc, but will also run via a simple LED transformer that converts household 240v AC mains electricity to 12v DC.

12v is a much safer voltage for DIY installations. Just 2 thin, low voltage wires that are easy to hide. 

Like all of my LED's these will only work if you connect them up the right way, but you will not damage them if you connect them the wrong way.

I am always happy to try to answer email questions, despatch within 24 hours & have been installing/selling LEDs for over 17 years.

Kind regards Dave