Made of hardened tool steel material, high temperature printing, high-wear resistance Nozzle size: 0.4mm, 0.6mm Or 0.8mm, The nozzle size is marked with Dot's quantity. Nozzle size with dot: 0.25mm(No dot); 0.4(3 dots); 0.6mm(4dots) ;0.8mm(5dots) Compatible with 1.75mm Makerbot ...Made of hardened tool steel material, high temperature printing, high-wear resistance Nozzle size: 0.4mm, 0.6mm Or 0.8mm, The nozzle size is marked with Dot's quantity. Nozzle size with dot: 0.25mm(No dot); 0.4(3 dots); 0.6mm(4dots) ;0.8mm(5dots) Compatible with 1.75mm Makerbot, Creality CR-10 All Metal Hotend, Ender 3/ Ender3 pro, CraftBot, Prusa i3 , Neptune 3 series 3D printer Pack: 1piece Nozzle size: 0.8mm ; Filament size: 1.75mm; Package: 1piece nozzle; Material: Hardened Tool steel; thread: M6 ; Nozzle size with dot: 0.25mm(No dot); 0.4(3 dots); 0.6mm(4dots) ;0.8mm(5dots).