Lead wires & cables: Special lengths, Protective hose
Shaft: Round, D-Cut, Cross drilled, Key-Way, Thread or Hollow
Winding: Resistance, Inductance, Rated Current, etc.
This bipolar Nema 17 stepper motor is one of the most popular model, it with step angle 1.8deg and size 42x42x34mm. It has 4 wires with 1m cable and 2.54mm pitch connector, each phase draws current 0.4A at 12V, with holding torque 26Ncm (36.8oz.in).