Small size, convenient storage and placement. Make sure the to a constant current or chopper drive controller before motor. Connecting the motor directly to a power supply will destroy the motor. Wide range of applications.It can be used in various area, such as stage lighting, textile machinery, 3d printer and etc. Features - Color: Silver. - Material: Plastic and steel. - Size: 3.00 x 2.90 x 2.70cm/ 1.18 x 1.14 x 1.06 inch. - Voltage: 5V. - Four-phase stepper motor with 5-wire, it is available for rotation of forward and reverse. - Fast, accurate and improved design, high torque and overall speeds are increased to ensure the stability of the motor structure. - Achieve the desired smooth rotation effect. Avoids systematic errors and achieves accurate results. - Low noise, strong and durable perfect combination of rotor makes the inner structure more stable. - Which can reduce the vibration and noise of the engine during operation. Package list: 2 x stepper motors