Cheap And Discounts Fiber Laser Conventional Nozzle Diameter 28 Mm Single And Double Copper Welding Nozzle Cutting Diameter 0.8-4.0 Thread M11 Wholesale. Buy Directly From Merchant HYCNC Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.