Virtjoule Heat Set Insert Tips for Sizes M2, M2.5, M3, M4, and M5 - Soldering Iron Tips for 3D Printer Users, 3D Printing Accessories Compatible with Hakko FX-888D and Weller SP40NKUS Soldering
Amazon.com: E-Z LOK Threaded Insert for Plastic Flush Brass Thread Inserts M4-0.7 Pack of 25 : Industrial & Scientific
QLOUNI 330Pcs M2 M3 M4 M5 Female Thread Knurled Brass Threaded Insert Embedment Nut Assortment Kit, Pressed Fit into Holes for 3D Prints and More Projects: Amazon.com: Industrial & Scientific
ShineNow Heat-set Insert Tips for T18 ST 900M FX888D FX600 WLC100 Soldering Irons to Install M2 M2.5 M3 M4 M5 M6 M8 Heat Set Inserts - - Amazon.com
HanTof 5Pcs Heat Set Insert Tips for M2,M2.5,M3,M4,M5 Threaded Inserts, Compatible with Weller WES51 WESD51 PES50/51 WE1010NA WCC100 LR21 Soldering Irons ET Tips, Used for Connecting 3D Printed Parts - - Amazon.com