High Power Laser 2.5W 445nm for Engraving and Cutting High Power Laser 2.5W 445nm for Engraving and Cutting [RKI-3804] - ₹6,350.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits
4W Industry Laser 445nm/447nm/450nm 4000mW Blue Laser Dot Module Diode NDB7A75 w/ TTL0-20kHz & Fan Cooling & Long Time Working: Amazon.com: Industrial & Scientific