Rim: AS 17.5mm Nickel Silver Cup: 22A American Shank A valuable nickel rim, no longer sold. Don't miss this opportunity! The tone is wonderful. Perhaps due to the nickel rim, leaps were also smooth. I purchased this here, but I've decided to continue using my current one. It's a shame to let it go, but I'd rather someone else use it. The rim also fit a Paxman cup. I will disinfect it before sending.