3pcs Nema 17 Bipolar Stepper Motor Kit 92oz.in 2.1a 4-lead 60mm Hobby CNC Package in 3PCS 65Ncm(92oz.in) holding torque NEMA 17 bipolar 1.65"x1.65"x2.36" 4-wire 1.8 deg. step angle(200 steps/rev) Rated current 2.1A & resistance 1.6ohms