Philips CorePro LED tubes are the quick and easy way to replace T8 fluorescent tubes or other LED tubes with a fast return on investment. The Core range of LED tubes not only requires a low initial investment, but the LED energy efficiency also provides immediate savings that you can rely on over a long and reliable lifespan. With the same lamp size and light distribution as fluorescent tubes, you will notice the difference. There are two ways to install these LED tubes: rewire your existing fluorescent tubes so that the CorePro LED tubes can be operated directly from the mains, or simply replace the fluorescent lamp starter with an LED starter that is compatible with your electromagnetic ballasts.