Once an industry standard, Hoff Stevens kegs are typically only found in smaller brewery or soda applications. This coupler is made to hook up to a co2 source, not a hand pump.
And now a limerick by Jason Harris
There once was a man name hoff stevens
Who drank beer with brew kegging heathans.
They tried to get hoff
to stop jerking off
and put his name on the keg for no reason.