Features:Stable & Durable - You need to assemble it by yourself. Including all the necessary screws and parts needed to replace the old raw weak extruder directly.Easy to Install - All you have to do is remove the original Creality extruder and screw from the new "metal extruder" and get ready to start printing. For 1.75mm long 3D printer MK8 Bowden extruder rack.More Convenient Pressure Adjustment - Pressure can be better pushed into the printer nozzle to improve the performance of the printer. This extruder kit has an adjustable bolt so that you can adjust the pressure of the extruder gear as needed.Supports plastic materials and conventional plastic filaments printing.Wide Compatibility - Original aluminium actuator for Creality 3D printer cr-10 series/cr-10 S4/cr-10 S5/cr-10 Mini/cr-10 s/cr-10 Plus.Specifications:Product type: Extruder Aluminum Block SetMaterial: AluminiumColor: RedSuitable: For Creality 3D printer cr-10 series/cr-10 S4/cr-10 S5/cr 10 Mini/cr-10 s/cr-10 PlusPackage size: approx. 8 * 6 * 2 cm/ 3.1 * 2.4 * 0.8 inPackage weight: 58g/ 2.0ozPackage List:1 * Extruder Aluminum Block Set