OXLasers Adjustable 5V 650nm Red Line Laser Module for Positioning Laser Alignment Locator for Wood Stone Fabric Cutting Laser Swamp (Line) - Amazon .com
650nm red line laser module,Industrial Laser Group Module adjustable focal length line cross point (line-4pack) - Amazon.com
650nm red line laser module industrial laser module adjustable focus line length 19.7″ DC plug diameter 10mm (cross-2packs) - Amazon.com