650nm red line laser module,Industrial Laser Group Module,5mw adjustable focal length, line, cross, point,(cross-4pack) - - Amazon.com
Fine/Precise Red Line Laser Diode Module Class IIIa: 3mW/ 635nm [CP-TIM-230-9-3L-635] - $64.90 : Calpac Lasers Diode Modules Pointers and Levels, 20 years of experience specializing in industrial and promotional laser diode