10/20/50pcs Flat Rivet Nuts M3 M4 M5 M6 M8 M10 M12 Black Carbon Steel Flat Head Threaded Insert Nutsert Cap Rivets Nuts

10/20/50pcs Flat Rivet Nuts M3 M4 M5 M6 M8 M10 M12 Black Carbon Steel Flat Head Threaded Insert Nutsert Cap Rivets Nuts

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