Amazon.com: 15pcs 5V 650NM 5Mw Red Dot Laser Head Red Laser Diode Laser Tube 6mm with Leads Head (15 PCS) : Industrial & Scientific
650nm 5mW Red Line Laser Module with Focusable Glass Lens Focus Adjust – eElectronicParts
Wholesale 650nm 5mW 3V-5V Red Point Line Cross Laser Module Head Glass Lens Focusable Adjustable Laser Diode Head Industrial Diameter 12MM From m.alibaba.com