202Pcs Threaded Inserts Set with Soldering Tip & Adapter M2 M3 M4 Knurled Nut Brass Heat Set Inserts for Plastic and 3D Printing

High-concerned chemical：None Type：Insert Model Number：M2 M3 M4 DIY Supplies：Metalworking Material：Copper Origin：Mainland China Color：brass color

High-concerned chemical: None Type: Insert Model Number: M2 M3 M4 DIY Supplies: Metalworking Material: Copper Origin: Mainland China Color: brass color