Features: This 10W laser module is specially designed for laser engraving and cutting machines. Fixed focus-, focal- length 50mm, no need to focus-, easy to use. Eye Protection Design - With protective cover on the laser head, can protect your eye from UV, when watch the visible magical- engraving process. Engravable materials: MDF, balsa-, paper, wood, fabric, plastic, leather, plywood, foam paper, anodized aluminum, stainless steel mirror can be directly engrave. Cuttable Materials: Cardboard, Nonwoven, Plywood, MDF, Acrylic, Some Thin Plastic Sheets Specifications: Size:approx 10.5x4x3.8cm/4.13x1.57x1.5in Material: Aluminum-Alloy Laser:10W input-Voltage;10V 3.7A Laser tube:2xLD+FAC+C-Lens Laser wavelength:approx 450nm Beam shape:Dot ( Fixed-Focus ) Focus-:0.069mmx0.157mm Working frequency:Less than 30KHz Safe temperature range:15 --50 Life time:15000-20000 hours Anti-static: Up to 25kV static- electricity can be eliminated Shell: Frosted material, good heat dissipation Magnetic blower protective shell:Constitutes an air duct, has good heat dissipation, and protects eyes and lasers Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PC Laser Cutter