AFUNTA 20 PCS 5M / 20G / PCS 1.75MM ABS 3D Print Filament For 3D Printer Pen For 3D Pens or ANY 3D Printing Smooth, kink-free and reliable Laser controlled extrusion process assures extremely tight, precision diameters. Our filament is made entirely of virgin ABS material Individual coils with reusable twist ties.