1.?8 Speed and Temperature Control: With 8 different speed levels, it is more accurate to control the filament extrusion speed. The temperature can be adjusted to melt different material. LEd screen displays the real-time temperature. 2.?PLA&ABS: Capable of using PLA( 160-180? ) and ABS( 180-210? ) filaments refill, and filaments diameter 1.75±0.02 mm. The refill is standard size so you can purchase extra filaments when it runs out. 3.?LCD Display:The LCD display will not only show the types of material you’re using(ABS or PLA), but also will display the temperature. 4.?Easy To Use:Just plug in the power supply, insert the PLA filament into the hole after the 3D pen is warmed up, press the load filament button, and the filament can be extruded through the nozzle?draw the 3d shape you want. 5.?BEST GIFT:3D pen set as a creative gift for you, children over 8 years old, adults, artists, fans. This 3D pen allows you to create creative patterns without limits of imagination. You don't need to worry about security,the 3d pen comes with two finger protector,Since the tip of the pen will become hot while the pen’s working,it’s required children should use this pen under adults supervision.