3D Printing Pen: 3d pen is made of eco-friendly ABS material and supplied by PLA filament refills that are non-toxic, non-irritating and 100% derived from plants. Capable of using PLA(170?) filaments refill, and filaments diameter 1.75±0.02 mm 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. It comes with 2 finger protectors to cover your thumb and index finger to avoid hurting during use, which can effectively protect your child's safety Support USB Charging: USB-DC powered by power bank, adapter or other other USB devices at any time. Even in outdoor activities, no worry about not being able to use it because there is no socket. It is more suitable for cultivating children's DIY ability and imagination When used outdoors 3D Pen for Kids: The 3d drawing pen is compatible with both 1.75mm PLA filaments.3D printing pen is a perfect gift for kids to create 3D masterpieces, improve their spatial thinking ability and encourage their creative imagination. At the same time, this 3D pen is also very suitable for parents and children to enjoy leisure time, to achieve your wonderful ideas Package Content:1x Masqudo 3D Pen with Filament; 1x Power Supply; 2 x PLA Filament; 2 x Silicone Fingertip Protectors;zero-risk purchase, 90 days 100% satisfaction guarantee and our friendly service - 24 hours email customer service response