Specification Brand : LKHRIPMA BulletPoint : Type: Other BulletPoint1 : Part Number: A4988 BulletPoint2 : Model: A4988 BulletPoint3 : ✿ Fits 1.75mm filament, 40 Teeth drive gear compatible for PLA/ABS/Wood/TPU/PTEG. Please Note: Some printer models like for Ender 3 and Edner 3 Pro, their original extrusion gears cannot be removed, so these model printers do not have to change the extrusion screw. Ender 3V2,its extrusion gear can be replaced. BulletPoint4 : ✿ Easy to Install. work Better, it makes loading the filament easier and smoother, no worries about filament scraping or breaking. BulletPoint5 : ✿ Package Includes: 1x Aluminum Extruder Kit. Color : One Color ExternallyAssignedProductIdentifier : 7649657618355 ItemName : DC 6V-12V 25GA-260 Gear Electronic Starter Reducer Large Torque Low Speed 16-32RPM Engine Robot DC Metal D-axis Motors Motor Starters ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-motors Manufacturer : LKHRIPMA ModelName : LKHRIPMA ModelNumber : LKHRIPMA NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : LKHRIPMA ProductDescription : LKHRIPMA