Features: Provides stable drive force to ensure smooth operation and high accuracy of the equipment. Wear-resistant and long service life metal stepper motor Accurate: Precise machining process ensure reliability. Apply to 3D printer maintenance, upgrading and remodeling enhances printer performances. Easy Installation: Simple installation for quick replacement and operation. For K1, K1C printer users and professional users and hobbyists who require highly performances of 3D printing equipment Specifications: Base Size:about 4.2x4.2cm/1.65x1.65in Height:about 6cm/2.36in ;4cm/1.57in For K1 K1C Optional Component: Metal Package Includes: 1PC Metal Stepper Motor note: Please allow 1-2cm errors due to manual measurement. Pictures may not reflect actual color due to different monitors. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.