Connection A+: Red, A-: Black, B+: Blue, B-: Green Buy 17HS19-1684S-PG14 Nema 17 Stepper Motor Bipolar L=48mm 44Ncm 0.131 deg 1.68A 2.8V with 14:1 It has 4 wires, each phase draws 1., 7A, with holding torque 44Ncm (62., 32oz-in). RoHS and CE Certified CNC DIY Motor Nema 17 Bipolar 1.8deg 44Ncm(62.3oz.in) 0.85A 42x42x48mm 4 Hilos - 17HS19-0854S For 3D Printer Axis Physical Specification Frame Size: 1., 65 x 1., 65 (42 x 42mm), Body Length: 1., 48 (37., 5 mm), Shaft Diameter: Φ0., 2 (5mm) Nema 17 Bipolar 1.8deg 44Ncm(62.3oz.in) 0.85A 42x42x48mm 4 Hilos - 17HS19-0854S Motor Type: Bipolar Stepper, Step Angle: 1., 8 deg , Holding Torque: 44 Ncm(62., 32oz-in), Rated Current/phase: 1., 7 A, Phase Resistance: 1., 86 ohms, Inductance: 3., 55 mH ± 20%(1KHz) Electrical Specification Manufacturer Part Number: 17HS15-1704S