This complete threaded insert kit includes the most commonly used metric sizes along with a compatible heat set installation tool. Designed for precision, durability, and ease of use, it provides a reliable solution for fastening in plastic and 3D-printed components. Key Features Complete Size Range with Tool Included Covers M2, M2.5, M3, M4, M5, and M6 sizes. Includes an extended-tip heat set tool for direct installation without additional equipment. Durable Brass Construction Made from high-quality brass for consistent thermal conductivity and resistance to corrosion, wear, and deformation. Precision Grip Design Clean threading and 45-degree knurled exterior improve torque resistance and holding strength within plastic materials, reducing the risk of slippage. Efficient Installation Built-in guiding design allows inserts to be installed without countersinking, simplifying the process and improving consistency. Organized Storage Each size is separated into labeled compartments for quick identification and convenient long-term storage. Wide Compatibility Suitable for PLA, PETG, ABS, PPS, PP, and other thermoplastics. Ideal for 3D printing, electronics housings, automotive plastic components, and general repair work. Specifications Sizes: M2, M2.5, M3, M4, M5, M6 Material: Brass Installation: Heat set method Application: Plastic and 3D-printed components Package Includes Assorted brass threaded inserts (M2–M6) Heat set insert tool (extended tip) Storage case with labeled compartments