When did they start offering these??AZer cuemakers warn that professionals only should install but you may want to install a Rhino $5 ferrule. I bought one for my 10.5mm Rhino and it measures 8.6mm plug, 9.6mm height, and 13.6mm cap. The cap requires filing but the plug may fit with super glue.
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I don't believe they were available when I got my shaft last year.