Professional laser module, easy to install, with less loss, provides 450nm wavelength, for efficient, precise engraving and cutting of plastic, wood, paper, etc., suitable for a wide range of engraving machines. Features: High quality material: laser module, has a solid, durable aluminum alloy coating, high engraving speed, low power loss, stability, long service life. Efficient operation: thanks to the adjustable focal length (5,5W) flexible and easy to use, it provides fast, clear engraving with high efficiency, high precision. Powerful ability: can engrave plastic, wood, leather, rubber, acrylic and others or cut wood and acrylic (power determines its ability). Easy installation: small and compact laser module body, has 28cm long line, comes with nuts, convenient and simple to install on the machine. Wide Application: works with laser cutting machine, laser engraving machine, CNC engraving machine, DIY laser and others, supports most engraving software. Technical data: Laser power: 5,5 W -Adjustable focal length: 5,5 W Material: aluminum alloy electronic components Main Color: Red Wavelength: 450nm Input Voltage: 12 V Output: Continuous (CW) Operating temperature: 0 ℃ ~ 70 ℃ Storage temperature: -40 ℃ ~ 80 ℃ Product Size: 3*3*10cm/1,18*1,18*3,93inch Package Weight: 145g/5.11oz Package Size: 17*13*4cm/6,69*5,11*1,57inch Note: Only laser module, others in the pictures are not included. Please do not use it without safety glasses. Due to manual measurements, deviation may occur. Due to lighting or other reasons, it may be slightly different from the pictures. List of things to pack: 1 * laser module 3 * screw; 3 * Washer