These super bright led's will last nearly forever and with epoxy coated circuit boards, you can pretty much install and never have to think about changin your taillights again! Convenient plug-in design makes this little modification a snap to install in minutes! Include led flasher, high quaity silicone gasket and utilize the factory bulb sockets. Uses 20 leds for stop, tail and turnsignal function, 9 more for side marker lights and led backup lights. User can choose between standard, rapidfire or sequential stop & turnsignals.