Product Details: 12mm base diameter, smaller size. Suitable for most cars, cars, motorcycles, trucks Low power consumption, energy saving, long service life. Easy installation, no wiring needed, direct replacement. Excellent replacement for instrument cluster panels, dashboard gauge light bulbs. Note: Please check your bulb in advance if it is not T4.7 socket before you place the order. If the LED does not glow, try to flip it at 180 degrees (reverse polarity)