Sharp GH0631IA2KC 5.6mm Red 638nm 185mW Laser Diode with PD (Single Mode)
638nm, 900mW High Stability Red Laser Module by OptLasers
High Power 638nm Red Line Laser Diode Module 300mw 500mw 700mw 1000mw With Cooling Fan (free With Bracket And Adapter) - Woodworking Machinery Parts - AliExpress