This NEMA 23 stepper motor is the perfect addition to your 3D printer or CNC router . With a full step angle of 1.8° (200 steps), it provides high precision and smooth operation. The motor has a solid shaft with a diameter of 8mm . It also has a low inertia and low noise, making it ideal for industrial automation and motion control applications. The TOSEASTARS brand stepper motor has a rated current of 3.0 A DC and a rated voltage of 4.5 V DC. It operates on 2 phases with a phase inductance of 2.4mH and a phase resistance of 0.8 Ω (10%). The wiring configuration is 4-wire bipolar and it has a holding torque of 1.2 N.m. This stepper motor is suitable for use in various industrial settings and is a great investment for anyone looking to upgrade their 3D printer or CNC router. .