LEORX 5pcs Replacement 0.5mm Extruder Nozzle Print Head for 1.75 Filament 3D Printer Color: mainly golden. Matrial: Brass. Outer thread: M6. Screw Outer Diameter: 6mm. Size(L*W): 13mm*6mm 0.51*0.24 inch. Accuracy of nozzle: 0.5 mm. Suitable for 1.75 filament. Application: makerbot 3D printer extruder. Note: This product is a replacement for MAKERBOT or 3D printer consumables only 1.75mm machine.