Specification Brand : RUMDS BulletPoint1 : Make of aluminum alloy & BulletPoint2 : hot end and volcano hot end are optional, you can choose according to your requires. BulletPoint3 : Φ2x10mm hole, this position can be installed with auto bed leveling but it does not fit with the bracket, you need to print the bracket to install. BulletPoint4 : Double gears with stable performances, high efficient heat dissipation, provide a solid and feed for hot end. BulletPoint5 : Φ3x14mm fixing plate connection hole, suitable for Ender3 CR10 3D printers. Color : A ExternallyAssignedProductIdentifier : 7704790030539 ItemName : 3D Printer Metal Extruder Gear Hot End Extrusion Volcano Replacement Parts Accessories for Ender3 CR10 ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 32 centimeters ItemPackageDimensions_Width : 32 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-extruders Manufacturer : RUMDS ModelName : Srliyaga596iqdg4-12 ModelNumber : Srliyaga596iqdg4-12 NumberOfItems : 1 PartNumber : RUMDS ProductDescription : 3D Printer Metal Extruder Gear Hot End Extrusion Volcano Replacement Parts Accessories For Ender3 CR10