Description: 【Universal Compatibility】: The Heat Set Insert Tips is designed for seamless integration with mainstream portable soldering irons such as the TS100 and TS101. 【Strong and Reliable Connection】: The specially designed soldering tip easily melts thermoplastic inserts and is suitable for various materials such as PLA, PETG, and ABS. It achieves a sturdy metal plastic connection, preventing loosening or stripping, ensuring your 3D printed parts have strong and reusable threads. 【Complete Kit】: This Heat Set Insert Tool kit includes 138 high quality brass soldering tips suitable for the most common metric thread inserts: M2, M2.5, M3, M4, M5, M6, and M8. This kit perfectly meets various repair and assembly needs, offering convenience and practicality. 【Brass Material】: The Soldering Iron Tips is crafted from brass, offering excellent thermal conductivity and durability. It provides smooth and stable installation every times, making it ideal for hobbyists and professionals seeking reliable results in projects. 【Multiple Sizes】: Includes multiple sizes of connectors (2*3.2mm, 4*4mm, 4*5mm, 4*7mm, 5*8mm, 6*10mm) and a universal adapter (26*5.2mm). Size Chart: External threaded heat fusion press heads: 0.2cm x 0.32cm/0.08inch x 0.13inch, 0.4cm x 0.4cm/0.16inch x 0.16inch, 0.4cm x 0.5cm/0.16inch x 0.20inch, 0.4cm x 0.7cm/0.16inch x 0.28inch, 0.5cm x 0.8cm/0.20inch x 0.31inch, 0.6cm x 1cm/0.24inch x 0.39inch Adapters: 2.6cm x 0.52cm/1.02inch x 0.20inch Package Includes: 1 set Heat Set Insert Tips(138pcs) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.