2.85mm Diameter TPU Premium Flexible Filament (Dimensional Accuracy +/- 0.05mm). Designed to fit most common 3D printers (check spool size for compatibility). Made in Europe. Engineered to reduce jamming. 1 kg (Approx. 2.2 lb) Spool. Spool made of resistant ABS, easy to check remaining length. Recommended Extrusion/Nozzle Temperature: 205°C - 230°C (401°F - 446°F). Spool Diameter: 7.87" - Spool Width: 2.63" - Spool Hub Hole Diameter: 2.05". Material: TPU (Thermoplastic Polyurethane) Strong yet Flexible. Includes a Resealable Bag storage bag included to protect filament between use. Environmentally friendly: all EOLAS products meet EU RoHS directive (EU Directive 2011/65/EU) by the European Union in order to prohibit or restrict the use of six hazardous substances (lead, cadmium, mercury, hexavalent chromium, PBB, and PDBE).