E-Z Press Brass Threaded Insert for Plastic - Flush 4-40, 6-32, 8-32, 10-32, 1/4

20 Pcs Brass Threaded Insert M4x8.1x6.3 mm for Plastic Components

40 Pcs Brass Threaded Insert M5x9.5x7 mm for Plastic Components

M4 Threaded Heat Insert Brass Knurled Nuts M4x16x6mm Plastic 3D Printing 20 Pcs

M4 Threaded Heat Insert Brass Knurled Nuts M4x15x6mm Plastic 3D Printing 20 Pcs

50 Pcs Brass Threaded Insert M5x5.8x7.1 mm for Plastic Components

Heat Set Threaded Brass Inserts 10pcs M2 M2.5 M3 M4 M5 M6 Great For 3D Printing

40 Pcs Brass Threaded Insert M2x4x3.5 mm for Plastic Components