I have a very narrow area behind the sink, about 6 inches long. I thought this might be the answer but the bent end of the nozzle is too thick. It needs to be thinner to get into those tight spots. And it doesn't stay stuck on your cartridge. You have to hold and guide the tip with one hand while trying to get the sealant to flow with the other. I don't understand all the rave reviews about it because honestly I don't recommend it. I would recommend looking around and see if you can find something better which I will do.
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