M3 Threaded Inserts for plastic-100Pcs M3x5.7x4.6 with Heat Set Insert Tools-...

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M3 Heat Inserts Brass Threaded Nuts 150 Pieces M3 x 5.7 x 4.6mm for 3D Printing

Durable Brass Insert Assortment with Heat Set Tool for 3D Printing Excellence

420 Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Brass Heat Set Inserts for Plastic

420 Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Brass Heat Set Inserts