50 pc #4 4-40 Long Brass Metal Threaded Heat Set Inserts Plastic 3D Printing

Brass Heat Insert Nuts M2-M10 Knurled Threaded Inserts for 3D Printer

EZ INSTALL M4 x 8mm (10 pcs) Knurled Brass Threaded Heat Set Inserts 3D Printing

M4 BRASS INSERT FOR PLASTIC SONIC-LOK SL-B-M4X5.8 THREAD KNURLED HEAT SET 100PCS

M4 4mm M4*5*5 Brass Threaded Heat Set Inserts for 3D Printing Bolts Screws Metal

NEW Copper Threaded Insert Nuts M2–M8 Knurled Heat Set for 3D Print & Notebook

100 PCS M3 Threaded Insert M3 x 4mm x 5mm Heat Set Inserts, 3D Printing Brass...

M2-M6 Brass Knurled Heat-Set Insert Nut for 3D Printer Threaded