Fangrui Product Details Features: 1) A Variety Of Connectors, Enabling The Embedding Of M2 (common To M2.5), M3, , M5, M6 (1/4inch), And Hot-melt Nuts 2) Compatible With Standard 936 Universal Soldering Iron Tips, Convenient And Practical (other Models: Fx-888d) 3) Copper Material, Good Thermal Conductivity, End Face Contact, Prevents The Nut From Skewing, And Facilitates Quick Embedding Of The Nut Into Plastic Parts 4) Compared With Other Similar Indenter, Our Indenter Is Embedded At A Short Distance To Avoid Plastic Parts After Being Pressed In. The Head Is Not Easy To Damage The Plastic Parts And Can Be Inserted Into The Plastic Parts To A Certain Depth. 5) Using Integrated Design, The Structure Is Stronger And Integrated Design, The Components Have Stronger Stress-bearing Capacity.note: Different Countries Have Different Voltages, So You Need To Choose A Soldering Iron Tip That Corresponds To The Voltage And Plug Type. Name: Integrated Hot Melt Nut Scope Of Application: Interchangeable With Standard 936 Universal Soldering