Feature: 1. Quick Response Speed: The motor has quick response speed for frequent starts, which instantly start and rapidly stop, has good control ability. 2. Silicon Steel Rotor: The rotor is made of excellent silicon steel material, with large torsion, stable output, low noise and long life. 3. Copper Coil: The motor coil adopts pure copper material, which the power output is smoothly and powerful. 4. 3 Layer Coating: 3 layer drop paint coated, effectively isolate dust, ensuring long life, which is 10 times that of ordinary coating. 5. Compact and Standard: International standard designed with precise and compact structure, easy to install and reliable to operate. Specification: Item Type: Stepper Motor Material: Aluminum alloy, silicon steel, copper Step Angle: 1.8°±5% Number of Phases: 2 phases Rated Voltage: DC7.8V Rated Current (One Phase): 1.5A Motor Driver Parameters: Model: SD42 Drive Current: 1.0-4.2(A) Input Signal Voltage: DC20-50V Input Pulse Frequency: 1-200K(HZ) Input Pulse Width: 250-5E+8(NS). Package List: 1 x Stepper Motor1 x Stepper Motor Driver