MakerBot METHOD 3D Printing Filament Bundle 9-Pack (900-0024A) is the best and most consistent material optimized for use with MakerBot's METHOD 3D Printers. These spools are for use in the MakerBot METHOD 3D Printer, METHOD X 3D Printer, and METHOD X Carbon Fiber 3D Printer. All MakerBot Material is manufactured to produce the highest quality 3D prints and is trusted by leading companies and institutions the world over, thanks to state-of-the-art material manufacturing and quality control standards. This 9-pack comes with each of the following: 6 spools of PLA Precision Model Material (2 True Black, 2 True White, 2 True Orange) and 3 spools of PVA Precision Support Material. Note: PVA material is a moisture sensitive water soluble material. The spools are shipped in resealable mylar bags, which are impermeable to light and moisture and help protect the filament from potential damage. Within the spool there is also desiccant to keep the environment moisture-free. A moisture sensitive material will run the risk of a high moisture uptake if stored improperly, which can result in decreased print quality and damage to the extruder.