Specification Brand : REDREX BulletPoint1 : 【Stable and Durable】: This upgraded metal bowden extruder is made of heavy-duty aluminum alloy,which is more stable and durable than plastic parts. BulletPoint2 : 【Application】:The direct drive extuder is wildly compatible with Ender 3 V2,Ender 3 Pro ,Ender 3 and CR10 Series 3D printer. BulletPoint3 : 【Bowden Tube】:Bowden Tube is developed specifically for 1.75mm filament with an extremely precise internal diameter. BulletPoint4 : 【Filament】:The extruder feeder supports PLA/ABS/Wood/Hips/Flexible/PTEG,with 40 teeth drive gear feeds the 1.75mm filament very smoothy. BulletPoint5 : 【Metal Spring】:Hole Diameter (OD) : 8mm/0.31";Rod Diameter (ID) : 4.4mm/0.18"; Length:20mm/0.78" Color : Red CompatibleDevices1 : Laptop CompatibleDevices2 : Smartphone CompatibleMaterial1 : Acrylonitrile Butadiene Styrene CompatibleMaterial2 : Plastic CompatibleMaterial3 : Metal CompatibleMaterial4 : Aluminum CompatibleMaterial5 : High Impact Polystyrene CompatibleMaterial6 : Wood CompatibleMaterial7 : Polylactic Acid ExternallyAssignedProductIdentifier : 7447531981881 ExternallyAssignedProductIdentifier1 : 814358015605 ExternallyAssignedProductIdentifier2 : 0814358015605 IncludedComponents : 3d printer assembled hotend and Silicone Socks ItemName : Redrex Ender 3 Extruder Metal MK8 Drive Feeder with Bowden PTFE Tube and Leveling Springs 3D Printer Upgrade Kit Compatible with Creality Ender 3 V2/Ender 3 Pro/Ender 3 Max and CR10 Series 3D Printers ItemPackageDimensions_Height : 13 centimeters ItemPackageDimensions_Length : 2 centimeters ItemPackageDimensions_Width : 9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-accessories Manufacturer : Redrex Material : Aluminum ModelNumber : QDISKHQ NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : RDX3D030P ProductDescription : NOTE: 1.This upgrading replacements ONLY for Ender 3 V2 Ender 3 Pro Ender and CR10 Series 3D printers. 2.Stepper motor is ONLY for reference,NOT included in package.