CNC mach3 4 Axis kit, 4pcs TB6600 driver +one breakout board + 4pcs Nema23 425 Oz-in stepper motor + 350W power supply#ST-4045 cnc mach3 3 axis kit 3pcs tb6600 stepper motor driver one breakout board 3pcs nema23 425 oz in motor 350w power supply st 4045