This is a case of 25 LED tubes designed to replace fluorescent T8 or T12 2 foot tube lights with some rewiring of your fixtures. These bulbs fit into fluorescent light fixtures with the G13 double pin ends. First you will need to disconnect the ballast. Next 1 or 2 pins at end of the tube needs to have an input power of 110-130 volts AC and at the other end 1 or 2 pins must to be connected to neutral for the light to turn on. IMPORTANT: Only one end of the tube can be connected power and the other end connected to neutral. You CANNOT connect + and - to the same end. 

The LED's are configured for maximum light output and the highest efficiency so the internal power supply is not dimmable and the cover over the LED's is clear. Each 2 foot long tube uses about 10 watts of power and produces about 1000LM. The color temperature is 4000K so it is whitish color normally referred to as cool white and sometimes bright or pure white. The light output is a popular all around choice because it is not like the extreme yellow color output of warm white and it is not like the blue color of daylight white, sort of in the middle, a whitish color output.

Each end of the light has G13 bi-pin ends and the tube can rotate 360 degrees to direct the light output to where it is needed.

LED Advantages Compared To Fluorescent Bulbs:

LED's have become a popular investment because of the immediate savings in electricity but LED's offer more advantages:

There is no delay or flicker at start up, LED's provide full brightness immediately.

Fluorescent bulb manufactures are beginning to publicize the fact that in order to reach the bulb's life expectancy, you must turn the bulbs on for a minimum of 3 hours or you will see a shortened service life. LED's do not suffer this pitfall. You will not shorten the life expectancy of LED's by turning them on and off many times during the day.

LED's are not effected by cool temperatures, LED's provide full brightness even at below freezing temperatures. LED's do not have a "warm up" period.

LED's do not contain Mercury so there are no disposal fees at the end of the bulb's life. In fact you may be able to receive money for recycling LED's. In many areas, scrap metal yards will pay you when you drop off LED bulbs for recycling because of the valuable aluminum heat sink along the entire length of the bulb.

Specifications:

110-130 Volt AC Input Power

G13 Bi-Pin 360 Degree Rotatable Ends

160 Degree Wide Flood Beam Spread

4000K Color Temperature 

CRI of 75