1、Low Resistance: High torsion, low resistance, low self induced reactance, high responsiveness, long life, low operating temperature. Low resistance allows for better thermal conductivity. It will work under safe temperature. 2、Reduce Noise: Stepper motor inner rotor adopts German technology. And the surface is coated with imported rotor glue to prevent the carbon steel from oxidizing and grinding to produce surface burrs and cause motor noise. 3、Multi Application: Small stepper motor can be used in 3D printers, stage lighting, textile machinery, placing machines, non standard equipment, automation equipment and other fields. 4、High Performance: This stepping motor has a starting speed of 600RPM, running speed of 800RPM, phase resistance of 1.8Ω±10%, phase inductance of 3.1mH±10%, stable and reliable use. 5、Premium Material: 42mm stepper motor is made of premium carbon steel, with high strength and hardness, able to withstand greater pressure and impact, abrasion resistant, longer service life. Item Type: Stepper Motor Material: Carbon Steel Size: Approx. 42 x 48mm / 1.7 x 1.9in Phase Quantity: 2 Phase Step Angle: 1.8° Rated Current: 1.6A DC Holding Torsion: 0.6N.M Min Start Speed: 600RPM Operating Speed: 800RPM Phase Resistance: 1.8Ω±10% Phase Inductance: 3.1mH±10% Rotor Inertia: 82 g.cm2 Insulation Resistance: 100mΩ min Insulation Class: Class B 1 x Stepper Motor 1 x Wire