Filament Diameter: 1.75 mm; Shore Hardness: 95A; Dimensional Accuracy +/- 0.05 mm; 250g (approximately 0.55 lbs) per spool; Vacuumed sealed with desiccant; Recommended extruder temperature: 200 - 220°C; Recommended platform temperature: 40 - 60°C TPU (Thermoplastic Polyurethane) is a subclass of thermoplastics which prints strong parts that are also flexible Compatible with 3D printers on the market which accept 1.75 mm filament; Including Prusa i3, Monoprice MakerSelect, SainSmart xCreality, and other RepRap printers With proper settings, TPU is easy to print thanks to excellent bed adhesion and the filaments tendency to not warp Great for a variety of projects, such as shoe insoles, watch bands, phone cases, drone parts and more