Made of wear-resistant materials, and able to serve you for a long time. These 3D printing filaments are the for 3D printing, drawing and 3D art. The printing is smooth, the molding effect is smooth and delicate, and there are no air bubbles. Features -Color:Assorted Color -Material: -Size:300.00X0.17X0.17cm/117.90X0.07X0.07in -Diameter: 1.75mm/0.07in -Our refill have precise diameter tolerance control, are bubble-free, and printing smoothly. -Made of anti-wear and good materials, it is , safe and no harm practical to use. -The printing does not block the head, the color has no color difference, and it is practical and . - workmanship, good texture, no plugging, no lagging. It is easy to use. -The material is easy to work with and produces good prints, making it a great option for both beginners and experienced users. Package list: 20 x rolls of 3d printer filaments