What is this?3D printing pen filament refills PLA plastic filaments, has good mechanical and physical properties, good tensile strength and ductility, suitable for making some small handicrafts and painting, for beginners or craftsmen who like to make small crafts.What will I get?Pack of 40 3D Pen Filament; Diameter: 1.75mm; Length: 250mm/10inch. Material: PLAAre there any advantages of the product?There is no need to worry about shrinkage when cooling, easy to use, no peculiar smell during printing. The printed model has good hardness and is durable as a structural part. The melting point is low, the flow is fast, and it is not easy to block the nozzle.How to use it?Put the refill filament into the feed opening at the end of the 3D printing pen, and the filament should be against the front end.
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