635nm 638nm Laser Module
    
        635nm, 638nm, 637nm, orange red laser module    
    
    
                
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                        Can engrave:
Wood, plastic, paper, leather
Can cut:
Paper, thin leather, thin wood plate
Cannot engrave:
Metal, glass, stone, etc
Note: the adapter only have US, EU standard. it is bonus for free. if it is not suitable, pls find a suitable one in your supermarket.