Short Height 13Ncm(184ozin) holding torque FOR NEMA 17 bipolar 165 inchx165 inchx079 inch 4-wire 18 deg. step angle(200 steps/rev) Rated current 10A & 35ohms This is Short Height FOR Bipolar Nema 17 stepper motor with 18 deg. step angle (200 steps/revolution). Each phase draws current 1A, allowing for a holding torque of 13Ncm(184ozin). Color: silver material: metal Electrical Specification: Manufacturer Part Number: 17HS08-1004S Motor Type: Bipolar Stepper Step Angle: 18 deg. Holding Torque: 13Ncm(184ozin) Rated Current/phase: 10A Phase : 35ohms Inductance: 45mH+/-20%(1KHz) Physical Specification: Frame Size: 42 x 42mm Body Length: 20mm Shaft Diameter: 5mm Shaft Length: 20mm D-cut Length: 165mm Number of Leads: 4 Lead Length: 400mm Weight: 140g Connection: Black(A+), Green(A-), Red(B+), Blue(B-) Warning: Make the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a supply will destroy the motor. Package Contents:1* 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.