Easy and Quick Assembly: It comes with several assembled parts, you only need about 2 hours to assemble 20 nuts well. Advanced Extruder Technology: Upgraded extruder greatly reduces plugging risk and bad extrusion; V-Shape with POM wheels makes it move noiseless, smoothly, and durable. Safety Protected Power Supply: Only needs 5 minutes for the hotbed to reach 110℃. It is a great project for middle school and high school-aged students. The perfect gift to spark a lifelong love for science and engineering, and provide a deeper understanding of machinery and robotics.