405nm 250mw Focusing Blue Purple Laser Dot Module Diode Fat Beam Ttl/analog 0-30khz With Tec Cooling For Uv-curable 3d Printing - Stage Lighting Effect - AliExpress
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