Review on Qasim 6-Pack Red LED Festoon Bulb 44mm 578 212-2 | 10-SMD 5050 LED Interior Map Dome Lights | Compatible with 569 6411 211-2 579 214-2 | 12V DC by Greg Bellman

Not suitable for some vehicles that require 578 bulbs. The bulbs are cheap quality, no heatsink, just the LEDs are cheaply glued on, and the packaging reflects the overall cheapness of the quality. Supplied in an anti-static bag only, which is very easy to damage in transit. The 578 needs 42mm bulbs and this one needs 44mm which doesn't seem like a huge difference but depending on the car the bulb won't fit unless the metal socket has a lot of strength. I bent the socket to make mine work, but not everyone can handle this type of lining. The only reason I kept it is because I couldn't find another LED with a warmer color, but I'll report on the durability.