This product is a set of three empty cardboard 3D printing filament spools, suitable for any use. The spools have a diameter of 1.75mm and are made of PLA material. They measure 8 inches in height and length, and 2.5 inches in width. The color of the spools is random, mostly black, and they come from China. The package includes 3 units, and there is no manufacturer warranty. The product is suitable for 3D printers and is categorized under Computers/Tablets & Networking, 3D Printers & Supplies, and 3D Printer Consumables.