K40 Series:co2 Glass Laser Tube 40w Length 700mm Laser Lamp For Diy Co2 Laser Engraving Cutting Machine - Woodworking Machinery Parts - AliExpress
K40 Series 40w Co2 Metal Head Laser Tube Diameter 50mm Length 700mm Laser Lamp Pipe For Diy Co2 Laser Engraving Cutting Machine - Woodworking Machinery Parts - AliExpress