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
uxcell Knurled Insert Nuts - 100Pcs M4 x 4mm Length x 5mm OD Female Thread Brass Threaded Insert Embedment Nut for 3D Printer : Amazon.ca: Tools & Home Improvement
uxcell knurled Insert Nuts, 100Pcs M4 x 4mm(L) x 6mm(OD) Female Thread Brass Threaded Insert Embedment Nut for 3D Printer: Amazon.com: Industrial & Scientific
LUOQIUFA knurled Insert nut, M4 x 6 mm Long x 6 mm Outer Diameter Internal Threaded Brass Insert Sorting kit, 100 per Pack: Amazon.com: 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
Hilitchi 460 Pcs M2 M3 M4 M5 Female Thread Brass Knurled Threaded Insert Embedment Nuts Assortment Kit, Embed Parts, Pressed Fit into Holes for 3D Prints and More Projects: Amazon.com: Industrial &
Heat Set Insert Tip for M3 M4 with Qty 20 M3 M4 Inserts Compatible with Hakko FX-888D and Weller SP40NUS Irons Used for Connecting 3D Printed Parts - - Amazon.com
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