NEMA17 Two Phase Hybrid Stepper Motor This NEMA17 two-phase hybrid stepper motor uses two phases, or two sets of coils, to generate motion. The "hybrid" designation refers to the use of both a permanent magnet and electromagnetic coils in the motor design. NEMA17 refers to the size of the motor, with the "17" indicating that the motor has a 1.7-inch square faceplate and a 1/4-inch shaft. These motors are typically used in precision motion control applications such as 3D printing, CNC machines and Robotics. Applications: 3D printing CNC machines Robotics Medical equipment Manufacturing Security systems Automation Package Includes 1x NEMA17 Two Phase Hybrid Stepper Motor Specifications: Motor length 48mm Diameter of axle 5mm Front shaft length 24mm Holding  torque 78 oz.in Size 42x42x48mm