Feature: 1. EXCELLENT DIODE: The laser module uses excellent diode, which has good reliability, stability and efficiency to ensure better laser beam quality. 2. FOCUS ADJUSTMENT: Users can adjust the focal length by rotating the laser head according to the working distance to find the best spot size. 3. FOR DESKTOP ENGRAVER: The laser module is also applicable to desktop engraver, such as for 1610, for 3018 models, which has good compatibility. 4. FAST HEAT DISSIPATION: With aluminum radiator, DC cooling fan, and holes to increase air flow help to quickly dissipate heat and prolong the service life. 5. HIGH ACCURACY: The laser module has high accuracy control, stable and continuous output power, and an average service life of 2000 hours. Specification: Item Type: Laser Module Laser Power: 15W Material: Aluminum Alloy, Brass, ABS Wavelength: 450nm Spot Shape: Point Accuracy: 0.3mm Input Voltage: 12V Working Temperature: 0℃-70℃ Service Life: 2000H Engraving Materials: Wood, cardboard, plastic, leather, PCB board, aluminum oxide, non reflective electroplated coating and painted metal, blackening art knife. Cutting Materials: Cardboard, non woven fabric, veneer, acrylic, and some thin plastic sheets. Interface Parameter: 3Pin (12V, GND, PWM). Package List: 1 x Laser Head1 x Power Cord1 x Protection Glasses Note: Please wear our glasses when using the laser module.