This copper nozzle is truly exceptional! It fits perfectly with my welding gun, and the shape of the cone allows for precise welding .The copper material ensures that the nozzle stays intact for a long period of time. I feel confident when using this nozzle and would highly recommend it to anyone in the industrial and scientific community. The only drawback is that it can be slightly expensive compared to other options in the market, but the quality certainly makes up for it..