0.4A with 12V dc voltage 1m Cable with Connector This is the most popular Nema 17 model. It with 1.8 . step angle (200 steps/revolution). Each phase draws current 0.4A at 12V, allowing for a holding torque of 26Ncm(36.8oz.in). Electrical Specification: Manufacturer Part Number: 17HS13-0404S1 Motor Type: Bipolar Stepper Step Angle: 1.8 . Holding Torque: 26Ncm(36.8oz.in) Rated Current/phase: 0.4A Phase Resistance: 30ohms Inductance: 37mH+/-20%(1KHz) Physical Specification: Frame Size: 42 * 42mm Body Length: 34mm Shaft Diameter: 5mm Front Shaft Length: 20mm D-cut Length: 15mm Number of Leads: 4 Lead Length: 1000mm Connection: Black(A+), Green(A-), Red(B+), Blue(B-) Warning: Make sure the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a power supply the motor. Color: black Material: metal Package Contents: 1 * Nema 17 Stepper Motor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.