They are big enough and have enough dome to be visible from different angles. The bulb can easily be swapped out for a brighter one. Outside is "chrome" plastic, I don't expect it to keep its new look over time, inside the barrel is metal. 5€ per piece is a good price. I've also found them at other online stores for $6 a pair. Drilling holes in my mount for these (and most other similar signal lights) was fairly easy. My old flashlights had a weird mount, these seem easier.
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