ZRK Enterprises has been the Zipper Repair Authority on How to Fix A Broken Zipper, since 1993. Simple Zipper Repair Kit Solution. Most often the Slider is the problem, not the zipper coil which is a surprise to many.
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Any way to fix that without replacing the whole zipper? It's on my
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A Tailor showed me this Method! How to Fix Broken Zipper 
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