GKTOOLS 500mW 405nm 12V Blue Laser Module 2.54-3P TTL/PWM Modulation For DIY CNC Laser Engraver Adjustable Focus FB03-500

GKTOOLS 500mW 405nm 12V Blue Laser Module 2.54-3P TTL/PWM Modulation For DIY CNC Laser Engraver Adjustable Focus FB03-500

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