1. Perfect Fit for Your 3D Printed Parts: Retrofit your 3D printed components seamlessly with our threaded inserts, effortlessly embedded using heat or ultrasound into blind- or through-holes. Providing a reliable and secure method for fastening components in 3D printing projects. Elevate the strength and functionality of your creations with ease. 2. Secure Hold with Simple Application: The opposite spiral-shaped knurled nuts provide a balanced high tightening torque, ensuring a stable connection. Our heat set inserts offer seamless installation onto plastic components, resisting torque and preventing pull-out. 3. Durable and Corrosion-Resistant: Crafted from high-quality brass, our threaded inserts provide optimal corrosion resistance and thermal conductivity. Exceptional durability and high resistance to breaking or deformation make them a reliable choice for various applications. 4. Versatile Compatibility with Plastics: Designed for all thermoplastics, including PLA, PETG, ABS, PPS, PP, and more, these inserts find applications in 3D printers, electrical molding machines, automotive plastic shells, and laptop molds. Their versatility ensures compatibility across a wide range of materials. 5. Practical Thread Insert Assortment Kit: This kit comprises 345 insert nuts in sizes M2, M2.5, M3, M4, M5, and M6 internal threads. It is thoughtfully packaged in a convenient plastic case for hassle-free storage, adding practicality to its use as a 3D printing accessory. Colour:Gold Material:Metal Package Contents: 345 * Threaded Insert Nut Kit 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.