PCL 3D Printing Pen Filament, 1.75mm Diameter, Available In 3 Meters And 5m Lengths, 10 To 30 Color Options, Suitable For Low-Temperature Printing, Non-Clogging Tip, Made Of Corn Starch, If Accidentally Ingested, Random Color Shipment. The Advantage Of PCL Is Its Superior Low-Temperature Printing Performance Compared To PLA.