20W Laser Module DIY Kit 450nm Professional Continuous 5.5W Laser Cutting / Engraving Module

Features:
Can be used for laser cutting machine, laser engraving machine, CNC, DIY laser.
Original laser diodes, high-quality LD capping technology, ensure service life.
Built-in driver board, 40mm threaded copper core with thermal grease compound, temperature sensor, NEJE factory 48 hour 100% power aging test, ensure long time working.
New lens, clear focus, not stray light, adjustable focal length.
Can carving / cutting MDF, balsa, paper, wood, fabric, plastic, leather, plywood, foam paper, anodized aluminum, etc.(Not suitable for iron or other metal)