Made of high-quality material for enhanced durability. Low noise operation. DC 5V 4-phase input for driver test module board. A, B, C, D four-phase indicators show working status. Equipped with standard interface for direct insertion. Rated voltage: DC 5V 4-phase Step angle: 5.625 x 1/64 No load starting frequency: 600Hz No load pull-out frequency: 1000Hz Pull-in torque: 34.3mN·m (120Hz) Holding torque: 34.3mN·m Coil resistance: 200Ω ±7% (25°C) Insulation resistance: 10MΩ (500V) Dielectric strength: 600V AC / 1mA / 1s Insulation class: A Temperature rise: Less than 40K (120Hz) Noise level: Less than 40dB (120Hz, no load, 10cm) Color: As shown in image Material: Plastic + Metal Package Contents: 5 x 28BYJ-48 Stepper Motors 5 x ULN2003 Motor Driver Boards (Due to different production batches, appearance may vary slightly; functionality remains the same) Note: Light reflection and differences in display screens may cause slight color variations between the product image and actual item. Measurement allows an error of +/- 1-3cm. Only the items listed above are included. Other accessories or products are not included.