[High-Quality Threaded Inserts]- Crafted from top-tier brass materials, these threaded inserts boast outstanding thermal conductivity, resistance, and durability. They exhibit remarkable resistance against breakage and deformation. Withstanding temperatures exceeding 300C / 572F, they easily endure the harsh heat generated during plastic thermal shaping processes. [Precision Craftsmanship]- High-precision and clear threading ensures stability and reliability, preventing thread slippage during rotation. The 45-degree angled knurling significantly enhances torque resistance and tensile strength, ensuring a stronger fastening. The embedded nuts feature guiding elements, eliminating the need for countersinking or recessing, making your work more convenient and efficient. [Easy to Use]- Brass threaded inserts can be installed into components of a 3D printer through heating or ultrasonic methods, or molded during the process. They are also suitable for circuit board assembly and the electronics field. With a common soldering iron, you can easily place them into the holes of 3D prints. [Wide Application] - These inserts are designed for use with all thermoplastics, including materials like PLA, PETG, ABS, , PP, and others. Whether installing them in 3D printed objects, -molded plastic parts, automotive plastic casings, or laptop shells, these inserts offer reliable and solutions. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Plastic box randomized! Material: brass colour: gold Package Contents: 400 x Threaded Inserts(Note: box Random color, don't accept the specified color.) 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