This stepper motor (PHB60S90-404AD) is supplied by one of the China's top stepper motor suppliers (PrimoPal Motor). It's a bipolar NEMA 24 hybrid stepper motor with 1.8° step angle (200 steps/revolution), made of high-quality cold rolled steel sheet and anti-high temperature permanent magnet. The rated current is 4.2A per phase, allowing for the holding torque of 260Ncm (99.0oz-in). This high-performance and high-reliability motor is terminated with 4 flying ended lead wires, and easily connected to the constant current or chopper drive controller.