SainSmart CNC TB6560 3 Axis 3.5A Stepper Motor Toshiba TB6560AHQ chip - High power, maximum 3.5A drive current. Professional design, two-stage signal processing, super anti-jamming. 1-1/16 microstep setting - Higher accuracy. Adjustable drive current settings for each axis - 25%,50%,75%,100% of full current can be set for different stepper motors. Overload, over-current and over-temperature safety - Full protection for your computer and peripheral equipment.