Fangrui Product Details K1 Gear 2 Sets (4 Pieces) K1 Max Extruder Gear Kit Full Metal Wire Drive Extruder Gear,for Creality K1 K1max K1c Ender-3 V3 Ender-3 V3 Plus Nickel Plating Prevents Rust, Making The Gears Last Longer And More Lubricated. Enhanced Durability, For Creality K1 Series Extruders Integrated Filament Drive Wheel Features All-steel Construction, Ensuring Superior Durability And Longevity. Heat-treated With A Surface Hardness Of 55 Hrc, It Can Be Used Continuously Without Wear. Improved Performance, This Filament Drive Wheel Features A Mechanized Integrated Design, Providing Accurate And Reliable Filament Feeding For Your 3d Printer. Colour:silver Material:hardened Steel Package Contents: 1set X 3d Printed Dual Gear Extrusion Kit Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.