I had a MIG (dual voltage) welder that needed welding nozzles but was having a hard time finding them. They fit perfectly and were at a great price. I've been using my MIG since purchase and they work very well. Good consumable at a great price. I have a mainspring on my gun so they only spin at the end. A good find for a complex application. So far this is working very well. I will buy it again just to have something on hand.