✅UNC SIZES 1/4" to 1/2": The most popular sizes for automotive, motorcycle, machinery, and industrial repairs. A Range of Stainless Steel Inserts (UNC 1/4", 5/16", 3/8", 7/16", 1/2". OurMaster Thread Repair Kit is the ultimate, professional solution that makes threadsSTRONGER THAN NEW! ).
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