The Sylvania ZEVO LED Light 921 White 6000K Two Bulbs High Mount Stop Brake Upgrade is a set of two LED bulbs that provide a cold white light with a color temperature of 6000K. They are designed to fit the 921 bulb fitment code and are suitable for use as stop lights, third brake lights, brake lights, and center brake lights. The bulbs have a wattage of 2.1 W and a brightness of 500 lm. They have a long lifespan of up to 30,000 hours and come with a lifetime manufacturer warranty. Also I. Sending out one or the other they are compatible if you have a problem with that please do not buy.