Durable, practical, portable, all these advantages, this stepper motor can satisfy you. This is a durable and practical stepper motor. The rotation speeds is uniform, and the step is not lost. The PCB board in the motor is strengthened, and a unique process is adopted to ensure that the stator teeth of the motor are polished evenly and cleanly. Features - Color: Black+silver. - Material: Resin+steel. - Size: 4.20X4.20X4.50cm/1.65X1.65X1.77in. - Rated voltage: 4.1V. - Rated current: 1.0A. - Insulation resistance: >=100M. - Insulation class: . - The PCB board is reinforced in the motor, and the unique stator process is adopted to ensure that the stator teeth of the motor wear evenly and cleanly - Thanks to their robust design and simple handling, they are also perfect for the most difficult operating conditions. - Precise rate and motion control can be established in an open control loop. - Selected wear-resistant steel material, safe and durable, can serve you for a long time. - design, smooth appearance, safe and burr-free, do not hurt hands. The structure is stable and not stuck. Package list: 3 x Stepper Motor