This item includes: 

3pcs  6-lead Nema23 stepper motor 23HS6620B. 

stepper motor ---23HS6620B

Detailed information:

• Model: 23HS6620B

• Frame Size: Nema 23

• Step Angle: 1.8 degree

• Voltage: 3.6V

• Currrent: 2.0A/phase

• Resistance:1.8Ohm/phase

• Inductance:2.5mH/phase

• Holiding Torque: 0.9N.m

• Rotor inertia: 300 g.cm2

• Detent torque: 4.0N.cm

• Leads Number: 6

• Weight: 0.7KG

• Length: 56mm

• Motor shaft:6.35mm