40W CO2 Laser Tube - Laser Engraver Parts - OMTech – OMTech Laser
Amazon.com: HUNST 40W/50W Co2 Laser Tube Length 700mm/800mm Diameter 50mm with Metal Head 3000 Hours lifespan for CO2 Laser Cutter and Engraver. (SP 40W A)
CO2 Laser Spare Parts 200W Puri CO2 Laser Tube for Metal Cutting Machine
High Quality Puri 80-180W CO2 Laser Tube for CO2 Laser Engraving Machine Factory Price Laser Tube - China CO2 Laser Tube, Laser Tube Price | Made-in-China.com