Restore stripped, cross-threaded, or worn internal threads with a 338-piece SAE and metric helicoil thread repair kit designed for automotive, machining, and equipment maintenance.
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Broad size coverage: Repair SAE threads from 1/4" to 1/2" and metric threads from M5 to M12 with the included drills, taps, inserts, and installation tools.
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Durable components: HSS drill bits and bearing steel taps are heat-treated to HRC 55–62, while the 304 stainless steel thread inserts provide strong, lasting connections.
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Straightforward process: Drill the damaged thread, tap the hole, install the coil, and break the tang using the included tools and hex key.
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Ready for mobile repairs: Use the kit on aluminum, iron, carbon steel, bronze, magnesium, and other materials, then keep every component organized in the included carry case.
