580+7PCS Heat Set Threaded Inserts Kit, M2 M2.5 M3 M4 M5 M6 Metric Brass Threaded Inserts Assortment, Knurled Inserts with Heat Set Insert Tool, for 3D Printing Components, Plastic Parts, DIY Projects

Budget-Friendly ChoiceBacked by real user usage data, this kit includes the 6 most frequently used metric knurled nut sizes for 3D printers: M2, M2.5, M3, M4, M5 and M6. It also features an upgraded heat set insert tool with an extended tip for perfect compatibility. No need to purchase additional tools separatelythis all-in-one set meets all your needs in a single purchase. | Top-Tier Brass Quality for LongevityMade of high-quality brass, our heat set inserts and tool feature great thermal conductivity. The sturdy brass resists oxidation, corrosion, breakage and deformation, performing much better than fragile quick-fail alternatives. These inserts stay reliable for years, ensuring firm fastenings even under heavy frequent use. | Precision Design for Maximum Secure GripHigh-precision threading prevents slippage during installation, while 45-degree spiral knurling boosts torque resistance and tensile strength. The knurled exterior creates tight friction with plastic, delivering stronger holding power than standard straight-threaded inserts. Built-in guides eliminate the need for countersinkingjust insert and secure for a firm, long-lasting fit. | Clear Identification & Tidy OrganizationEach threaded insert size is stored in a separate sealed compartment to avoid messy tangles. With clear and easy-to-read size labels, you can get the right insert in seconds and store it neatly. Keep your workspace organized for long-term use, easy to handle even without professional skills. | Universal Compatibility & Reliable Quality AssuranceWorks perfectly with all thermoplastics (PLA, PETG, ABS, PPS, PP) and various projects from 3D printed parts to automotive and laptop housings. Each item is strictly inspected for durability. Suitable for electronics, toys and furniture with long-lasting reliable retention. Buy with full confidence.