Professional laser module, easy to install, with lower loss, provides 445nm / 450nm wavelength, for efficient, precise engraving and cutting of plastic, wood, paper and so on, suitable for a wide range of engraving machine. Features: High Quality Material: laser module, Features solid durable aluminium alloy shell, high engraving speed, low power loss, stability, long lifetime. Efficient Work: flexible and easy to use, ensures fast, clear engraving with high efficiency, high precision. Powerful Ability: it can engrave plastic, wood, leather, rubber, acrylic and others. Easy Assembly: small and compact laser module body, convenient and simple to install on the machine. Wide Application: it works with laser cutting machine, laser engraving machine, CNC engraver, DIY laser and more, supports most engraving software. Specifications: Type: XT2.5W / XTS20WD / XTS15W / T40WD (Optional) Material: Aluminium Alloy + Electronic Components Power Supply: 12V DC Wavelength: 450nm Module Input: XT2.5W: 12W / XT20WD: 20W / XTS15W: 15W / T40WD: 40W Output Power: XT2.5W: 2.5W / XT20WD: 5.5W / XTS15W: 5W / T40WD: 10W Item Size: XT2.5W: 9 * 3.3 * 3.3 cm / 3.54 * 1.3 * 1.3 inch XT20WD: 12.5 * 3.3 * 3.3 cm / 4.92 * 1.3 * 1.3 inch XTS15W: 11.4 * 3.3 * 3.3 cm / 4.49 * 1.3 * 1.3 inch T40WD: 13.2 * 4 * 4 cm / 5.2 * 1.57 * 1.57 inch Item Weight: XT2.5W: 124g / 4.37oz; XT20WD: 154g / 5.43oz; XTS15W: 155g / 5.47oz; T40WD: 249g / 8.78oz Package Size: XT2.5W: 10.8 * 8 * 5 cm / 4.25 * 3.15 * 1.97 inch; XT20WD & XTS15W & T40WD : 15.3 * 10.2 * 5 cm / 6.02 * 4.02 * 1.97 inch Package Weight: XT2.5W: 165g / 5.82oz; XT20WD: 214g / 7.55oz; XTS15W: 212g / 7.48oz; T40WD: 314g / 11.08oz Note: Laser module only, others in pictures are not included. Please do not use it without safety glasses. Due to manual measurement, there may be deviation. Due to lighting or other reasons, it may slightly differ from pictures. Package List: 1 * Engraving Laser Head(XT2.5W / XTS15W) 1 * Connecting Cable / 1 * Engraving Laser Head(XT20WD / T40WD) 1 * Connecting Cable 2 * Accessories 1 * User Manual (English)