??New Double Gear Extrusion Mechanism.
??UPGRADE: Perfect replacement for Creality 3D Printers CR-10/ CR-10S/ CR-10S Pro/ Ender 3/ Tornado, etc.
??All-metal aluminum alloy, High quality dual gear extrusion, stable and durable.
??For 1.75mm Filament. This Kit NOT include the instruction manual, we need to DIY :)
??Made by WINSINN, make sure the "WINSINN" label on the box for our after-sales service.