Features: The UM3 extruder nozzles are designed after long-term testing to minimize clogging and material feeding issues. Made with low thermal conductivity, corrosion resistance, and high abrasion resistance. These 3D printer nozzles offer excellent toughness, hardness, and high temperature resistance. The inner wall of the UM3 nozzles is smooth with no burrs, has a low viscosity coefficient, and a nozzle diameter error of less than 0.02 mm, ensuring accurate and smooth extrusion. This 4-piece set allows for easy and timely replacement, supporting consistent print quality. Specifications: Material: Brass Nozzle Diameter: 0.4mm Color: Gold Nozzle Length: 3mm (0.11in) Type: Compatible with Ultimaker 3 (UM3) Quantity: 4pcs Note: When disassembling, heat the nozzle above 200°C before removal. Due to lighting effects and shooting angles, slight variations in color may occur. A 0–1 cm measurement error may exist due to manual measurement. Package Includes: 1 Set (4 Pcs) UM3 Nozzles