1. Original aluminum drive gear for Creality 3D printers in the CR-10 series, CR-10 S4, CR-10 S5, CR-10 Mini, CR-10S, CR-10 Plus. 2. Stable and Durable: DIY kit, requires self-assembly. Our kit includes all necessary screws and parts needed to directly replace the old, original weak extruder. 3. Easy to Install: Simply unplug the original Creality extruder, unscrew it from the new metal extruder, and get ready to print. 4. For 1.75mm filament 3D printer MK8 Bowden extruder frame. 5. The advantage of a metal extruder is that you can apply better pressure to the nozzle to improve printing performance. Our extruder kit features an adjustable bolt so you can adjust the pressure on the extruder gear as needed. Features: Original aluminum drive gear for Creality 3D printers in the CR-10 series, CR-10 S4, CR-10 S5, CR-10 Mini, CR-10S, CR-10 Plus. Stable and durable: DIY kit, requires self-assembly. Our kit includes all necessary screws and parts needed to directly replace the old, original weak extruder. Easy to install: Simply unplug the original Creality extruder, unscrew it from the new metal extruder, and get ready to print. For 1.75mm filament 3D printer MK8 Bowden extruder frame. The advantage of a metal extruder is that you can apply better pressure to the nozzle to improve printing performance. Our extruder kit features an adjustable bolt so you can adjust the pressure on the extruder gear as needed. This modified MK8 extruder includes a filament guide tube, all screws, a spare drive gear, and an upgraded Bowden coupler for CR-10 3D printers. Specification: Material: Aluminum Color: Red Package Weight: approx 66g Package List: 1 * Extruder Kit 4 * Nozzle