Details ◉ Cup RK/V7 Inner diameter 17.9mm Medium depth, Old Giardinelli shape Throat 4.6mm Collaboration with Rico Kuhn Shank is between European and American ◉ Rim B7 Originally 17.9mm inner diameter, but has been shaved to 18.0mm, so the original gold plating on the inner rim, where the lips contact, is peeled off. Gold plating remains on the outer rim. There is a slight step because of the 0.1mm difference from the cup.