450nm 4W 4000mw Adjustable Dot Blue Laser Diode Module Engraver 12V TTL

450nm 4000mW Blue Dot 4W Focusable Laser Module TTL Fan Engraving Cutting 12V. Wavelength: 450nm 2. Out power: 4w 3. Laser head size: 40 x 40 x 100mm 5. Light spots can generally be transferred to <0.5mm (500um) 7.

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