SainSmart 1.75mm PVA Dissolvable 3D Printers Filament -0.5kg/1.1lbs (Natural) 0.5 KG (approximately 1.10 lbs) Spool 1.75mm Filament Diameter (Dimensional Accuracy +/- 0.05mm) PVA 3D Printer Filament Vacuumed Sealed With Desiccant Recommended Extrusion/Nozzle Temperature 160C - 180C (320F - 356F) Spool Diameter: 8" - Spool Width: 2.50" - Spool Hub Hole Diameter: 1.50"