The Hoff-Stevens Keg Coupler is used in the USA but is very uncommon, however Mac and Jacks still uses it on their 1/4 barrels. Most brewers have completely switched to US Sankey couplers. Often times, home brewers will use this type of coupler on older barrels. Please check with your beer retailer first to see if this is the coupler you need. This coupler is brand new, not refurbished.