oxlasers 405nm 500mW Blue Violet Laser Module for 3D Printer 12V Focusable DIY UV Laser Head for Engraving and Cut with TTL PWM - Price history & Review | AliExpress Seller -
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500mW 405nm Laser Module 0.5W Blue Light Laser Cutter Head, CNC Laser Cutting Engraver Parts, TTL PWM Laser for CNC Router _ - AliExpress Mobile