450nm 40W Fixed Focus Laser Module, the focal length cannot be adjusted. The laser is powered by 12V and modulated by PWM. Adopt industrial heat exhaust fan, environmentally friendly materials, low power consumption, and low noise. 1. High-power lens compression, fixed-focus laser head, the spot size is 40mm<0.5mm based on the radiator surface. 2. 450nm 40W Fixed Focus Laser Module, 10W power Fixed Focus for fast engraving, can cut and engrave stainless steel, and cut wood. 3. High heat dissipation and high efficiency, terminal head 2P2.54 terminal reverse line, the circuit board adopts 12V/PWM modulation board, 12V power supply. 4. Source manufacturers, Ultra high precision, Stable performance, Fast engraving, No worries after the sale.