This listing is for one used Whelen 9UTUBE for 9M lightbars. Rest assured that all strobe parts I sell are tested to be sure they are firing sharply and have a minimal amount of blackening on the tip to ensure that they will provide you a long service life. Any strobe parts that have signs of fatigue are discarded or given to local tow companies to help them with their cost. If you have any questions please feel free to message me and I will be glad to help in any way I can. Thanks

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