10pcs 532nm 50mw Focus Line Green Laser Diode Module 5V. Power : 50mW. 10x 532nm 50mW Line Laser Diode Module（No Adapter）. Wavelength: 532nm. It makes a nice clean straight line, and will work excellent for a guideline on Press brake, Cut /Engraving/Sewing/CNC machine ,etc.
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