400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts

400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nut...

Versatile 400 Count Brass Heat Set Inserts, M2 - M6 for Precision Applications

400Pcs Threaded Inserts Heat Set Insert M2 M2.5 M3 M4 M5 M6 Metric Knurled Nuts

Durable 400-Piece Brass Heat Set Inserts for M2 to M6 Plastic Applications

400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts...

Durable 400-Piece Brass Threaded Inserts, M2-M6 for Reliable Plastic Fastening