Stepper motors are great when positioning accuracy is required such as CNC applications.

This is a good quality stepper motor, NEMA 23 Standard with torque of 14 KG.cm

Features

• Step Angle (degrees) : 1.8
• 2-Phase
• Voltage: 12V
• Rated Current: 2A/Phase
• 6.35 mm Diameter Drive Shaft
• Holding Torque:  1.29 N.M
  
• NEMA 23 form factor
• Wire Leads: 4 wires

For Microchip excellent PDF introduction to stepper motors, click here