CNC 3018Plus 300/500W Spindle Kit 40/80W Laser Apply Nema17/23 Stepper Set

  
Stepper motor: Apply to Nema17/23 42/57BYG Stepper motor. Effect Output Power: 80W(10W optical power), 40W(5.5W optical power). Fixed focal length: After installing the red protective case, place the acrylic under the red case, fix the laser, and then remove the acrylic, this is the best engraving distance.