”D” System American Sankey Coupler with pull lever handle is the most common Keg coupler system available in the U.S. and used by all the major breweries as well as most craft breweries. This keg coupler is constructed of a 304 Stainless Steel  body with a Stainless Steel Probe. The included black pull handle is suitable for 1/6 small dia Kegs. This D system coupler is easy to use – simply pull out and down on the lever handle to tap a keg.