oxlasers 405nm 500mW Blue Violet Laser Module for 3D Printer 12V Focusable DIY UV Laser Head for Engraving and Cut with TTL PWM|3D Printer Parts & Accessories| - AliExpress
405nm, 200mW High Stability NICHIA Source Laser
Blue 405nm, 250mW, Free-Space OBIS Laser by Coherent
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COHERENT 405 RADIUS 1051505/AK 405 NM LASER WITH CONTROL BOX