Cheap And Discounts NEJE N30820 40W Laser Module Head Output power 5.5W-7.5W TTL / PWM Air Assist Kit for CNC Laser Cutting/Engraving Machine Wholesale. Buy Directly From Merchant NEJE Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.