1/3/5pcs 3V 5V Copper laser head 650nm 6/9/12mm 5mW laser cross diode module red
5V Adjustable Laser Head Laser Tube Copper Head 6MM OD Laser Diode Red Point Laser Module Wavelength: 650NM Power: 5MW OD: 6MM. Laser wavelength: 650nm (red). Output power: <5mW. Laser small copper head (red).