Bipolar stepper motor ,dimension 42*42*38mm, 2 phase, 4 leads Nema 17 Stepper Motor with 30Ncm holding troque Rated Current/phase 1.5A & Phase Resistance 2.0ohms Step angle 0.9deg, 400 step/revolution Low noise high speed 3d printer stepper motor, build with 1m Cable and Connector