I didn't get to use thes on the battlefield, I was very eage to use them and ended up testing them on the 4th. All I can say is that these only burn for 15 seconds, but puts out very thick smoke, I couldn't see the house across the street for about 7 seconds. Recommended for anyone that's wanted to use smoke grenades. Well worth the price! The blue one was also a very thick and vibrant blue.
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