40W CO2 Laser Tube for Laser Engraver Cutting MachinePrecision Engraving: Our CO2 Laser Tubes produce stable laser beams for more precise markings on a wide variety of materials. Power: Maximum power: 40W Beam Diameter: 2. 5mm Triggering Voltage: 20 KV Operating Voltage: 15 KV Optimal Operating Current: 10 13 mA Power Stability: 5% Wavelength: 10,640 nm Cut up to 1 8" thick plywood and acrylic plexiglass Lifetime: 40W Hermetic CO2 Glass Tube with an estimated lifetime of up to 2,000 operation hours