This printing , made of good and anti-wear materials, safe and , and can be used with confidence. Wear-resistant, , specially used for 3D printing and painting, printing without clogging, no color difference. Practical and . Features -Color:Assorted Color -Material:Plastic -Size:1000.00X0.15X0.15cm/393.00X0.06X0.06in -Size:500.00X0.15X0.15cm/196.50X0.06X0.06in -Note: Suitable for all types of 1.75mm 3D pen. - 3D printer , perfect dimensional accuracy, provide through the extruder nozzle. - The printer has the characteristics of resistance to deformation, temperature resistance, owning professional functions. - is proper for low printing temperature printing for energy efficiency. - 3D printer is and not easily brittle, will not easy to break when dropped from a height to the ground. - can be a for different kinds of 3D drawing and 3D art, satisfy your demands. Package list: 10 x 3D Pen (5m) 10 x 3D Pen (10m)