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20pcs Wire Thread Inserts M12x1.75 Metric 1D 12mm Helical Threaded Sleeve

20pcs Wire Thread Inserts 1/4-20 UNC 1.5D 9.6mm Helical Threaded Sleeve

20pcs Wire Thread Inserts M12x1.75 Metric 2D 24mm Helical Threaded Sleeve

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20pcs Wire Thread Inserts M12x1.75 Metric 2.5D 30mm Helical Threaded Sleeve