650nm Red Laser Diode Module Focusable 13mmx42mm with Power and Heatsink
1 x Adjusted Red Diode Lasers Industrial 3v-5.5v 650nm 660nm Laser Dot/Line/Cross Module Focusable 13mmx42mm with Adapter & Heatsink. Wavelength: 650nm,660nm. Be sure the operator has experience in optics DIY or testing.