Check the listing for details. 660nm 30-40mw Diameter 9mm Red Light Word Line Laser Module Marking Indicator. Condition: New. Listed at 9.11 USD. Title 660nm 30-40mw Diameter 9mm Red Light Word Line Laser Module Cutting Positioning Marking Line Indicator Product size: 9*17.5mm Wavelength: 660nm Power: 30-40mw Voltage: DC 3V Line length: 26# 100mm Compliant:ROHS and PAHS Scope Of Application: Line source semiconductor lasers can be used as auxiliary marking lines and positioning functions, and are widely used in processing machinery in various industries, such as: tire building machines, woodworking machinery, stone bridge cutting machines, cutting and cutting, check and bag positioning, Textile printing positioning, shoe machine positioning, sports equipment processing, glass processing machineryPackage 1*660nm 30-40mw diameter 9mm red light word line(Tips:The price is for one piece,no three piece)