This diffuser was a total letdown. I purchased it for my Lincoln Magnum welder and the quality was terrible... After only a few uses, it started to fall apart. It's frustrating how something in the Industrial and Scientific category can be so poorly made..
Based on my experience, this diffuser fits PERFECTLY onto my Lincoln Magnum gun and aids in creating an even flow of gas for a clean weld. The material quality is impressive and ensures durability..