The item includes 5pcs  4-lead  bipolar Nema17 stepper motor 60 oz.in with single  shaft. 

 length of axle 24MM,diameter of axle 5MM   17HS4417  4-LEAD.

Detailed information:

• Model: 17HS4417

• Frame Size: Nema 17

• Step Angle: 1.8 degree

• Voltage: 3.4V

• Currrent: 1.7A/phase

• Resistance:2.0 Ohm/phase

• Inductance:3.0mH/phase

• Holiding Torque: 4000G-cm=40N.cm

• Rotor inertia: 54 g.cm2

• Detent torque: 0.22 kgcm

• Leads Number:4

• Weight: 0.24KG

• Length: 40mm

• Motor shaft:5mm