One Pair 1157 RED 39 LED Light(2 bulbs) BA15d /12V Turn Signal Light, Corner Light, Stop Light, Parking Light, Side Marker Light, Tail Light, and Backup Lights This is for one pair of 1157 LED bulbs (2 bulbs) (Dual Beams) Cross Reference: 1034. 2057 12 LEDs up layer, 27 LEDs down layers. Total 39 LEDs Lights with Wide View Angle for better reflection Double your current light output Diameter 25mm (1.0"). 19mm height (LED part). 44mm total height.