Features3 Refined AxisThree axes allow forflat engraving with an effective area of 300(X)X 200 (Y)X 40 (Z)mm(11.8″X 7.8″X 1.6″),which can accommodate most items.GRBL Control BoardThe GRBL control boardcan directly read the engraving files in the USB.It can output 2P/3Pand support PWM and TTL functio..