Welcome to our store! 1. High-quality 3D printer accessories made from premium aluminum alloy, durable and long-lasting. 2. Excellent performance with internal threaded connection. 3. Helps maintain a stable hot end temperature. 4. Can extend the lifespan of the heat block and extruder, resulting in a longer lifespan for the printer. 5. Green, safe, and non-toxic. Strict quality control system, quality assurance. Features: 1. High-quality 3D printer accessories made from premium aluminum alloy, durable and long-lasting. 2. Excellent performance with internal threaded connection. 3. Helps maintain a stable hot end temperature. 4. Can extend the lifespan of the heat block and extruder, resulting in a longer lifespan for the printer. 5. High temperature resistance. 6. Green, safe, and non-toxic. Strict quality control system, quality assurance. Specifications: Color: Red, Blue (optional) Material: Aluminum alloy Mounting type: Internal threaded connection Operating temperature: 350 ℃ Size: 1.6 x 1.6 x 1.2 cm / 0.63 x 0.63 x 0.47 in Weight: Approximately 7g Packaging contains: 1 x Heat Block Guaranteed Satisfaction: Our customers are our top priority. If you find any issues with the product, please contact the seller immediately. We strive to provide satisfactory after-sales service.