Mixed Box of Business, Industry & Science including Rilitor 3D Pen Filament Refills 1.75mm PLA,12 Colors PLA 3D Pen Filaments 1.75mm,10 Feet per Color,Total 120 Feet,1.75mm PLA 3D Pen Filament Refills for MYNT3D,SCRIB3D 3D Pens and Printers (12 Colors)