Item Type: Printer Nozzles Cleaner Kit Material: Brass Input Diameter: Approx. 1.75mm / 0.07in Output Diameter: Approx. 0.4mm / 0.02in External Thread: M6 Thread Length: Approx. 4mm / 0.16in 1. Material: These 3D printer nozzles are made of high-quality brass, while the nozzle cleaning needles are crafted from high-quality stainless steel. 2. Long Service Life: Utilizing advanced production technology, these 3D printer accessories are durable and designed for a prolonged service life. 3. Nozzle: The extruder nozzle effectively prevents leakage from the print head and ensures a consistent printing outcome with a smooth finish. 4. Excellent Cleaning Needles: These nozzle cleaning needles are highly flexible and robust, making it easy to maneuver the needle into a nozzle without breaking. 5. Applicable Scene: These needles are specifically designed for 0.4mm 3D printer nozzles and serve as excellent accessories for 3D printers.