Experience new 3D printing materials. $60+ retail value in every box! Make more extraordinary things by leaving the research and planning to us. Each month receive high quality filament in unique colors and exotic materials from your favorite professional suppliers. We also include a curated list of proven 3D printable models, tools, samples, and more to help you make the most of your shiny new spool of robot food. Each box includes your choice of a 1kg spool of 1.75mm or 3.00mm PLA for FFF/FDM printers. Experimental 3D printing materials. Try something new with our included project ideas and supplies. Enjoy a different color PLA spool, sample print & matching poster every 30 days. Free shipping.