300 Pcs M3 Brass Heat Inserts Threaded Knurled Nuts for 3D Printing Plastic

100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Tw

300 Pcs M3 Brass Heat Inserts Threaded Knurled Nuts for 3D Printing Plastic

100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Tw

300 Pcs M3 Threaded Inserts M3 X D5 X L4 Heat Set Inserts Brass 3D Printing Knur

100 Pcs M3 Threaded Insert M3 Heat Set Inserts 3D Printing Brass Nuts Knurled Tw