Package Including Pack of 2 Premium Quality Gas Diffuser D-MA250 For use with Miller New MDX-250 MIG Gun and Bernard BTB MIG Gun. NOT compatible with M-Series Guns or Consumables This Gas Diffuser is a Direct Replacement for D-MA250, Pair with MDX (T-ACH Series) Contact Tips, (N-A5800C) Standard Nozzle Brand New & High Quality. Made of High-quality copper, which has good electricity conductivity, high temperature resistance, and wear resistance. Provides excellent and long-lasting performance in welding tasks Regular replacement of consumables is necessary to help improve welding efficiency and prevent undesirable conditions that result in unfused welds Package Including Pack of 2 Premium Quality Gas Diffuser D-MA250