Heat Set Insert Tool M2 M3 M4 M5 M6 M8 Hot Melt Brass Knurled Nut Embedded Insertion Tip Adapter Kit 3D Printed Parts Install for T12 Soldering IronAbout this itemExpand for T12/900M Soldering Iron Functions: Include 2 heating tip adapters specially designed to for 936/T12 soldering iron and turn them into a portable heat insert pressing machine tool to expand their functions,Heating tip with M4 thread!M2-M8 Brass Knurled Nut: Wide range brass knurled nut embedded insertion tip heads include M2,M2.5,M3,M4,M5,M6,M8 to meet your most installation needsEasy to Use: Screw installation design easy to change different head model, no need to take off the soldering iron whole tip,just screw off the tip head then install the model headBetter Performance: Tip head made from brass with high strength and good heat conduction ensure better heat insertion performance to get a smooth and clean insert than the normal soldering iron using3D Printed Parts Essential Tool: Ideal for install brass knurled nut into your 3D printing parts enable you assemble and disassemble your projects easily, but won't ruin or contaminate your part rather than a normal soldering iron tip that either stuck or penatrate the insert holeColor: Gold & SilverMaterial: CopperPackage Contents:1 set x T12 Hot insert Nut Iron tip