Laser Optical Protective Windows Protective Lens for Fiber Laser Head 37mm
Fiber Laser Machine Building / Upgrade/ Retrofit Solution For 500-3000w - Cnc Controller - AliExpress
Amazon.com: TEN-HIGH Bullet Shape Laser Nozzle Kit for Fiber Laser Cutting Head, Maximum Dia.35.5mm, Combined Height 43mm, Caliber 3.5mm, Including Double Layer Laser Cutting Nozzle and Base and Mounting Cover.
DIY fiber laser cutter with fiber laser kit from Reliable Laser - YouTube