Cheap And Discounts FB03 2500mW 445nm 12V Blue Laser Module 2.54-3P TTL/PWM Modulation For Laser Engraver Can Control Laser Power Focusable GKTOOLS Wholesale. Buy Directly From Merchant GKTOOLS Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.