5.5w cylindrical engraving usb mini portable desktop engraver grbl laser module. Feedback is very important to us. Product parameters Voltage 110v 60HZ Input voltage 12V Body material acrylic + aluminum alloy Body size 235mm 320mm 375mm Engraving area 100mm 200mm Communication method USB (CH340) Control system GRBL Packing size 404536cm Machine net weight 5kg Operating system WinXP/ Win7/ Win8/ Win10 Support cylinder diameter 15-100mm Carving materials cans, wood, paper tube plastic packing list Goggles + power cord + USB + laser.