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10Pcs Slotted Screw Thread Insert Nuts, M12x1.75 Male to M8x1.25 Female Reducing Nuts 18mm for Threaded Repair (303 Stainless Steel): Amazon.com: Industrial & Scientific
50Pcs L'insert de filetage autotaraudeur,Set Auto-taraudeuses inserts filetés inox(M3/4/5/6/8/10/12) - aussi pour réparer le filetage interne endommagé : Amazon.fr: Bricolage