Used to replace a worn out or stripped adjustment knob. Fits these regulators: T742HP / T1683STC, T1661ST / T1694STC, T752HP / T5741PMHPB, or any of series 700, 1600, 5700, 5200, or 8000. It can also be used with older CO2 models to replace a worn zinc bonnet. Comes with installation sheet.
MADE IN THE USA