M3 Threaded Inserts, M3 x 4mm x 5mm Metric knurled Nuts, 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut, 100 PCS

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M3 Threaded Inserts, M3 x 4mm x 5mm Metric knurled Nuts, 3D Printing Brass Nuts Female Threaded Inserts Brass Heat Set Insert Embedment Nut, 100 PCS