LEDIN 3157 CREE XB-D Projector LED Back Up Reverse Light White 50W 3156 3057 2 pieces (a pair) of High Power 10x CREE SMD LED 3156, 3057, 3157 light lamp bulb, ~50W 6000K xenon HID white color light temp. Type of Lights: 2 Genuine CREE LED chip w/ build-in projector light on top with 8 CREE LED around Bulb size (exclude the socket): ~30.7mm (~1.21 inches) in length; ~17mm (~0.67 inch) in diameter with OEM 3156, 3057, 3157 socket base