QDLASER Fiber optic cutting head tight locking ring BT220/BM115 & BT240/BM109 & BT240S Nozzle Connection Part model number:For BT240S Its main function is laser

Its main function is  laser cooling  to heat the air on the device for heat exchange with the environment

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QDLASER 80-100W CO2 Laser Power Supply Monitor AC90-250V EFR Tube for CO2 Laser Engraving Cutting Machine HY-Z80 Z Series

which can be adjust for centering the laser beam

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QDLASER Fiber optic cutting head tight locking ring BT220/BM115 & BT240/BM109 & BT240S Nozzle Connection Part model number:For BT240S Its main function is laserProducts Description QDLASER Raytools Fiber optic cutting head tight locking ring BT220 BM115 & BT240 BM109 & BT240S Nozzle Connection Part