Shaft join size

[RickyD77]

i all i sell prensently my shaft on ebay but i dont know the join size, just wonder if someone can tell me how to mesure it

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=7218006894&rd=1&sspage name=STRK%3AMESE%3AIT&rd=1

the last but this shaft has was a boulanger...
thanks

[dareads]

If the link you provided was for the shaft you are selling then it would be a 5/16 14 joint.

[Cueless Joey]

5/16 14 joint pin, the collar diameter is around .840 inches.

[RickyD77]

Thank you