I want a new shaft but don't know the size of pin I need. I know it's 5/16 but don't know if it's 18 or 14 (no idea what that means...). I have a Brunswick Centennial Cue, here's the link to its stats;
http://www.brunswickbilliards.com/brunswick_collection/accessories/cues/centennial_cue.html
http://www.brunswickbilliards.com/brunswick_collection/accessories/cues/centennial_cue.html