Laser Module - Green - COM-09906 - SparkFun Electronics
Red Laser Diode Modules
2pcs Industria Brass 532nm 50mW Green Beam Laser Module 3V-3.7V w Spring&Driver | eBay
Laser Pointer Head 650nm Red 5MW Laser Modules DC 12V 3 6V Industrial Laser Tube With Adjustable Focal Length From Breadstorygroup168, $1.51 | DHgate.Com
15W Focusable Blue Laser Head Module 445-450nm Laser Engraver Part with PMW | eBay