5 out of 25 bulbs would not light. Poor quality.

5 out of 25 bulbs would not light, thus one star for poor quality. As to the performance of the bulbs that worked: Some bulbs will blink on about every 5 seconds. Most blink on once per second or two which is typical of other twinkle bulbs I have. If you are trying match these bulbs to other bulbs, these are slightly thinner than other C7 bulbs I have.

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