【STURDY AND DURABLE】The rivnut gun is made of carbon steel with high-strength heat treated finish for long lasting. EASY TO USE】The rivet nut tool kit includes replaceable mandrels and nozzles of various sizes: M3, M4, M5, M6, M8, M10, M12, 10 nuts each of 7 specifications, and a blow molding storage box, allowing for adaptation to nuts of different specifications.
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