Co2 Laser Glass Tube 40w | 40w Co2 Laser Tube 700mm | Co2 Laser Engraving K40 - 40w Co2 - Aliexpress
Custom laser tube mounts for K40 - had trouble aligning my new 45w tube with stock clamps. : r/ChineseLaserCutters
40W CO2 Laser Tube - Laser Engraver Parts - OMTech – OMTech Laser
Amazon.com: Cloudray CO2 Laser Tube 40W 45W Length 720mm Dia.50mm Glass Tube With Metal Head For 35-45W CO2 Laser Engraver Cutter : Arts, Crafts & Sewing
TEN-HIGH 40W CO2 Laser Tube 700mm D50mm, Wires Preconnected with Coating, for Laser Cutter Laser Engraving Cutting Machine