Nichia NUBM44-V2 / NUBM47 7W+ 450nm Laser Diode 9mm to-5

This is a great diode, very strong, and pretty durable. You get alot of laser for your money. The only downside is, it does build up a lot of heat , quickly. So you do need to make sure that you heat sink this diode properly, and heat sink the driver also. Heat sinks are mandatory...