General description The 2Pcs 17Hs08-1004S 4-Lead Nema 17 Stepper Motor is designed for DIY projects, including 3D printers and CNC machines. This bipolar stepper motor offers precise control and reliable performance, making it an excellent choice for various applications. Technical specifications Motor Type: Bipolar Stepper Step Angle: 1.8° Rated Current/phase: 1.0A Phase Resistance: 3.5 ohms Inductance: 4.5 mH ±20% (1KHz) Frame Size: 42 x 42 mm Body Length: 20 mm Shaft Diameter: 5 mm Shaft Length: 20 mm D-cut Length: 16.5 mm Number of Leads: 4 Lead Length: 400 mm Weight: 140 g Connection: Black (A+), Green (A-), Red (B+), Blue (B-) Usage Ensure the motor is connected to a constant current or chopper drive controller before testing. Avoid connecting the motor directly to a power supply. Other information Color: Silver Material: Metal Package Contents: 2 stepper motors Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual