500mw Laser Expansion Kit

500mw laser extension head for XY plotter machine.

It could engrave on wood, paper, plastic, leather, cloth, chocolate, etc. 

• The laser can cause blindness. Please do not direct eyes or direct high-reflective smooth. Wear sunglasses while using engraving with the laser.
• Do not place it where children can get it. Underage or minors are forbidden from buying this.

(PS: no use on metal).