▲Long Life: Abrasion-resistant hardened nozzles have a longer and longer service life. ▲Multipurpose: The nozzle of the MK8 extruder is suitable for 3D printers and fits the original size perfectly. ▲Durable material: It is made of high-quality, durable steel material, strong and durable, easy to install, and long service life. ▲Features: 0.4mm E3D nozzles can prevent print head from leakage effectively and produce consistent prints with smooth and glossy polish. Reduce the resistance from the corners and avoid blocking of the filament with rounded chamfer.the nozzle is the perfect partner for the printer. ▲Good effect: All nozzles are manufactured with a tolerance of less than 0.01 mm. This means that your filament will have a very smooth and clear surface while extruding which, of course, results in better prints.