20pcs Wire Thread Inserts 1/4-28 UNF 2.5D 16mm Helical Threaded Sleeve

20pcs Wire Thread Inserts 1/4-28 UNF 1.5D 9.6mm Helical Threaded Sleeve

20pcs Wire Thread Inserts 1/4-28 UNF 3D 19.2mm Helical Threaded Sleeve

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20pcs Wire Thread Inserts 1/4-28 UNF 1.5D 9.6mm Helical Threaded Sleeve