20W 30W 40W Adjustable Focus Laser Head for Laser Engraver Cutter By LASER TREE Product Description The Blue Laser Module is designed for CNC mill. With 450nm wavelength, it is an effective tool for laser engraving and laser cutting. they can engrave and cut a variety of materials. Features: Blue Laser Module --- Professional laser head with high speed and high stability. Bright blue-violet light, easy for locating when engraving Adjustable Focus --- Adjustable laser head, easy to adjust, ensure engraving with good quality and high efficiency Easy to Assemble --- More mounting holes design, small and compact Widely Compatibility--- 12V laser head, compatible with kinds of laser engraving machines LT-40W-A-GOLD: LT-30W-A-BLUE: LT-20W-A:

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