Quick Connector Probe G3/8 Left Hand - Fuel Gas
The most common and useful quick connector probe type with G3/8" left hand thread so it will fit most types of torch inlets plus the vast majority of regulator / flashback arrestor outlet connections. The QC probe nut is brass with the probe being manufactured from stainless steel to provide consistent sizes and long working life.
The fuel gas probe cannot be fitted onto the inert QC body nor the oxygen QC body.