4 Truck Trailer Round (2 Red + 2 Super Bright White) LED Light 4" STOP TURN TAIL BACK UP REVERSE FOG Functions as stop turn tail back up reverse fog light. 12-diode square LED for RED light 19-diode square LED for White Light. ( It is +++ bright. Features chrome reflector inside the lens which will make this light much brighter . DOT approved. Very Easy installation! Acrylic lens is sonic welded to the housing. kit includes 4 LED light kits with grommet and plugs . 2 Red lens red light and 2 +++ bright white lights.