GRBL MINI Cylindrical Laser Engraving Machine Desktop Cans Wood Engraver 5500mW. Cans, wood, paper tube plastic. Adjust the focus of the laser head.The laser focal height can be adjusted by rotating left and right; 5.5W laser and fixed focusing column (adjustment speed is faster and more accurate). Can work for a long time. Easy to operate with the help of software. Import the image, enter the text, you can engrave. Small cylindrical laser engraving machine. Create a laser engraver for the cylinder. Goggles + power cord + USB + laser. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday.