ALL-IN-ONE KIT: This 131-piece thread repair tool kit by DAYUAN includes bits, taps, and inserts in the 5 most needed SAE sizes: 1/4", 5/16", 3/8", 7/16", and 1/2"
PURPOSE BUILT: The installation tools in this helicoil kit are constructed from high-speed steel for superior handling while the inserts are heated-treated 45# steel for greater strength and longevity in place
WIDE APPLICATION: Our drill and tap set is ideal for restoring stripped or damaged internal threads as well as for performing maintenance work to protect any threads from wear and tear
EASY TO USE: The convenient carrying case holds and organizes all the parts for easy transport and storage between jobs; on the site, the drill bits quickly create room for the installation tools to smoothly fit the inserts that repair your old threading; the breakoff tools clean things up for use
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