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Lincoln Magnum PRO 400A Water Cooled MIG Gun Fast-Mate, 10' - K4521-2-FM-45


SKU LINK4521-2-FM-45
Lincoln Electric - SKU LINK4521-2-FM-45

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Top Features:

  • Rated at 100% Duty Cycle
    • The 400A and 500A guns run at 100% duty cycle using 90/10 mixed gas, making them ideal for high heat applications.
  • Industrial Grade Construction
  • Premium Tip Performance
    • The large diameter and mass of the Magnum PRO Copper Plus contact tips help disperse heat and keep the tips cooler, expanding their life.
  • Expendables Built for Hight Heat
    • The 500A water-cooled gooseneck design keeps the nozzle cool in high-heat applications.
  • OverMolded Handle Design
    • The soft rubber over molding enhances comfort and allows for an easier grip of the gun.



  • MIG
  • Pulsed MIG
  • Flux-Cored


Wire Diameter Range:

  • .035" - 5/64"


*10' Lead

Product Reviews from Verified Customers