Wide Application: The dash lights can replace most T5 and T10 bulbs, compatible with sizes 17, 18, 37, 70, 73, 74, 79, 85, 86, 2721, PC74, PC37, PC118, 882, T10, T15, 194, 168, 158, and W5W; please check the socket size carefully before ordering. Stable Performance: The dash lights feature high-brightness LED chips and a reliable circuit board, providing stable illumination without delay or flickering; designed with efficient heat dissipation for low operating temperature and low power consumption, suitable for long-term use. Easy to Install: Plug-and-play design allows for quick installation; simply insert into the dashboard slot and rotate the socket; if the LED does not light, rotate it 180 degrees to reverse polarity and reinstall. Practical Functions: Suitable for automotive instrument panel indicators, speedometers, odometers, tachometers, map lights, overhead lights, license plate lights, trunk lights, and other interior lighting applications. Color: As shown in photo. Material: Plastic. Package Contents: 20 x T5 lamps with lamp holders, 20 x T10 lamps with lamp holders. Note: Light reflection and differences in display screens may cause slight variations in color appearance; measurement may vary by +/- 1-3 cm.