Dual lasers fit 500+ Materials. 20W 1064nm infrared laser (for all metal materials) and5W 455nm blue light (for wood, acrylic, etc). This laser engraver can 0.2 mm aluminum, steel and silver one pass and 1.5 mm aluminum, 3mm acrylic and 5mm pine wood multiple times. This laser engraving machine allows you to customize business cards, wood blanks, dog tags, tumbler laser marking. Widely used gift customization, commercial marking, store customization, home DIY, maker teaching.