Harris 402 050 580 D 402050580D Argon Helium Nitrogen Regulator MC 90 MK Products Collet 5002 Extended 1 16 in 36 MK Products Collet 5002 Extended 1 7 8 Inch OD 624 0210 1 The MK Products Python LX Miller Compatible Water Cooled Push Pull Gun 50FT 400A 10 Pin – 273 850 is a water cooled push pull MIG welding gun that combines the robust engineering of the Python with the practical design of the Cobra MX to deliver reliable performance and superior operator control at increased duty cycles The Model GP402 is not recommended for High Purity applications that may be sensitive to contamination due to elastomeric components The Model GP402 maintains a constant delivery pressure from full to near empty Cylinder conditions