MAINTENANCE & QUALITY ASSURANCE: Keep your 3D printer functioning seamlessly with our precision cleaning and maintenance tools. The included stainless steel cleaning needles and hexagon wrench ensure you can effortlessly maintain your nozzles, while the storage box organizes all components efficiently. Take charge of your creative projects today by ensuring flawless and consistent print quality.DURABLE BRASS BUILD: Our nozzles are crafted from high-quality international standard brass, offering impressive thermal conductivity and resistance to high temperatures and abrasions. Designed for long-term use, these nozzles are a testament to durability and reliability. Upgrade your 3D printing experience, knowing that you can rely on the enduring performance of these remarkable brass nozzles.UNCOMPROMISED PRECISION: Elevate your 3D printing projects with our 0.4mm brass nozzles, featuring a precise input diameter of 1.75mm. With an extruder nozzle diameter error of less than 0.02 mm and a smooth inner wall, these nozzles drastically lower the risk of leaks and clogs for exceptional print quality. Achieve the perfect balance between print speed and quality that your creative endeavors deserve.COMPLETE KIT: Embark on your 3D printing journey with our thoughtfully curated set. Enjoy 25 pieces of 0.4 mm brass nozzles, 10 stainless steel cleaning needles, curved tweezers, a hexagon wrench, and a handy storage box. Each tool is neatly packed for your convenience. This comprehensive kit equips you with all the essentials for maintaining and enhancing your printer's performance.BROAD COMPATIBILITY: Designed for versatility, these MK8 extruder nozzles are a perfect fit for Creality 3D printers, including the Ender 3 series and CR 10 models. Compatible with 1.75mm PLA and ABS filament 3D printers, they empower users to seamlessly integrate into their existing setups, encouraging you to push the boundaries of your 3D printing capabilities with confidence and ease.