CNC 4 Axis Stepper motor Driver ROUTER,MILL , 7A + CNC DB25 Breakout Board adapter Kit CNC 4 Axis Stepper motor Driver ROUTER,MILL , 7A + CNC DB25 Breakout Board adapter ... (1.5A,2.0A, 2.5A,3.0A,3.5A,4.0A,4.5A,5.0A) Resolution: 1/2, 1/8, 1 ... -class Optical-coupler. High quality with Surface-mount Tech. sw_4AXIS_7A_001 CNC 4 Axis Stepper motor Driver ROUTER,MILL , 7A MACH3 KCAM4 EMC2 ...