A longer shank than other tips allows you to reach into 3D printed parts and tight corners to install heat-set inserts without touching your iron and melting the plastic. Brand new and high quality. Compact and , this Heat Insertion Tool is easy to store and convenient to use. Made of high-quality brass, it is anticorrosive and has great heat conduction. There are 7pcs heat set insert Soldering tips for heat-set inserts, Wide size ranges gives you lots of flexibility to choose the right insert for your 3D printing project. This tool set is made especially for inserting heat set inserts of 3D printing parts, each tip head matching the corresponding inserts perfectly, making it very easy to install the insert and more importantly you get a smooth and clean insert. 1. Name: hot melt nut indenter 2. Scope of application: interchangeable with standard 936 general-purpose soldering iron tips, used for M2 (M2.5 shared), M3, , M5, M6 (1/4 inch), M8 and other hot-melt nuts or inserts, often used in 3D Printer prints hot-melt copper nuts or implants nuts on plastic. Material: brass colour: gold Package Contents: 7 x Heat Insert Nut Iron Tip 100 x M3 nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.