Feature:1. With adjustable focal length (5.5W/ 10W/ 20W) or fixed focal length (30W/ 40W). Made of premium quality aluminum alloy casing with great durability.2. It can engrave paper, wood, fabric, plastic, leather, anodized aluminum, 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 screws, convenient and simple to be installed on the machine.5. Wide application, it\u0027s designed for laser engraver, laser cutting machine, 3D printer, CNC mill and so on, suitable for DIY lover, CNC engineer, artist and more.Specification: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:With adjustable focal length (5.5W/ 10W/ 20W) or fixed focal length (30W/ 40W). Made of premium quality aluminum alloy casing with great durability.It can engrave paper, wood, fabric, plastic, leather, anodized aluminum, 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 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 moreNote: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: 5.5W/ 10W/ 20W/ 30W/ 40W (Optional)--Adjustable Focal Length: 5.5W/ 10W/ 20W (20-70mm)--Fixed Focal Length: 30W (12.6mm)/ 40W (15mm)Color: BlackMaterial: Aluminum Alloy + Electronic ComponentsWave Length: 450nmLuminous Color: BlueOperating Voltage: 12VPWM/ TTL Input: DC 3.3V-12V, 100Hz-50KHzInput Interface: XH2.54-3 Pin (+, -, PWM/ TTL)Continuous Working: UnlimitedOperating Temperature: -20~70Item Size: Approx.5.5W/ 10W: 105 * 30 * 30mm / 4.13 * 1.18 * 1.18in20W: 120 * 40 * 40mm / 4.72 * 1.57 * 1.57in30W/ 40W: 115 * 40 * 40mm / 4.53 * 1.57 * 1.57inPackage Size: Approx. 16 * 6 * 6cm / 6.30 * 2.36 * 2.36inPackage Weight: Approx.5.5W/ 10W: 170g / 5.99oz20W: 258g / 9.09oz30W/ 40W: 263g / 9.27ozPacking List:1 * Laser Module3 * Screw3 * Washer1 * User Manual (English)Package List:1 * Laser Module3 * Screw3 * Washer1 * User Manual (English)