This complete threaded insert assortment is designed for precise and reliable installation into plastic and 3D-printed components. The kit includes a wide range of insert sizes along with multiple heat-set tips and an adapter for efficient installation. Key Features Complete 440-Piece Assortment Includes M2, M2.5, M3, M4, M5, and M6 threaded inserts across multiple sizes for versatile applications. Heat Set Tips & Adapter Included Comes with 6 heat-set insert tips and a soldering iron adapter for compatibility with standard tools, allowing accurate and controlled installation. Convenient Handling Tools Includes tweezers for easier handling of small inserts during installation. Durable Brass Construction Manufactured from high-quality brass with strong thermal conductivity, corrosion resistance, and long-term durability. Enhanced Grip & Torque Resistance Precision threading and knurled exterior create strong friction within plastic materials, improving holding strength and reducing slippage. Efficient Installation Methods Suitable for heat-set, ultrasonic, or injection molding applications, providing flexibility across different workflows. Wide Application Range Compatible with PLA, PETG, ABS, and other thermoplastics. Ideal for 3D printing, electronics, furniture, automotive parts, and general repairs. Specifications Sizes: M2, M2.5, M3, M4, M5, M6 Material: Brass Quantity: 440 pieces Installation: Heat set, ultrasonic, or molding Package Includes 440 × Brass threaded inserts (assorted sizes) 6 × Heat-set insert tips 1 × Soldering iron adapter 1 × Tweezers Storage case