Usage Tips: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.