1、It has fixed focal length (best focal length: keep the plastic bottom edge of the laser head 8mm away from the engraving object). Made of premium quality aluminum alloy casing with great durability. 2、It can engrave paper, wood, plastic, leather, sponge, stainless steel, etc.. Different laser modules for engraving/ cutting different kinds of material and different thicknesses. 3、Features high engraving speed, low power loss, good stability and superior performance, with fine heat dissipation to extend its service life. 4、Compact and lightweight, easy to assemble, has over 30cm long line. Comes with a metal plate and 3 screws, convenient and simple to be installed on the machine. Professional laser module, easy to install, with lower loss, provides 450nm wavelength, for efficient, precise engraving and cutting of plastic, wood, leather, paper and so on, suitable for a wide range of engraving machines. Features: It has fixed length (best length: keep the plastic bottom edge of the laser head 8mm away from the engraving object). Made of premium quality aluminum alloy casing with great durability. It can engrave paper, wood, plastic, leather, sponge, stainless steel, etc.. Different laser modules for engraving/ cutting different kinds of material and different thicknesses. Features high engraving speed, low power loss, good stability and superior performance, with fine heat dissipation to extend its service life. Compact and lightweight, easy to assemble, has over 30cm long line. Comes with a metal plate and 3 screws, convenient and simple to be installed on the machine. Wide application, it's designed for laser engraver, laser cutting machine, 3D printer, CNC mill and so on, suitable for DIY lover, CNC engineer, artist and more Note: 1. Please wear laser glasses during usage and avoid touching the laser directly with your eyes and skin. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Laser Power: 50W/ 80W (Optional) Output Power: 10W/ 11W Color: Red Material: Aluminum Alloy + Electronic Components Length: 450nm Length: Fixed Input Voltage: 12V Output: Continuous (CW) Operating Temperature: 0~70℃ Storage Temperature: -40~80℃ Item Size: Approx. 125 * 47 * 44mm / 4.92 * 1.85 * 1.73in Item Weight: Approx. 222g / 7.83oz Package Size: Approx. 16 * 6 * 5.5cm / 6.30 * 2.36 * 2.17in Package Weight: Approx. 319g / 11.24oz Packing List: 1 * Laser Module 1 * Metal Plate 3 * Screw 2*Plastic Ring 1* Location-Plate 1*User Manual 1 * Laser Module 1 * Metal Plate 3 * Screw 2*Plastic Ring 1* Location-Plate 1*User Manual