The 3D Printer Extruder Nozzle set includes 6 pieces of extruder nozzles whose output diameter are 0.4mm and 6 pieces of extruder tubes with length of 25mm. The set is suitable for MK8 Makerbot Reprap Prusa I3 3D Printer. Characteristics High-quality materials: The brass print head is hard, firm and has a long service life. Excellent workmanship The print head has a smooth inner wall with no burrs and has a low degree of adhesion, thereby it produces a low pressure load and a high conduction speed. Good compatibility Perfectly compatible with all 1.75mm PLA ABS 3D printers Specification of the extruder nozzle: Outer diameter: 5mm Input diameter: 1.75 mm Output diameter: 0.4 mm Material: brass Length: 13 mm Weight: 1.7 g Specification of the extruder tube: Thread: M6 Outer diameter: 5mm Inner diameter: approx. 2.5mm Length: 25 mm Material: stainless steel Weight: 2.5 g Products include: 6 * brass 3D extruder nozzle 6 * 3D extruder tube 1 * user manual