Fangrui Product Details [high-quality Threaded Inserts]- Crafted From Top-tier Brass Materials, These Threaded Inserts Boast Outstanding Thermal Conductivity, Corrosion 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 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