We get a lot of creative descriptions that are not at all helpful when trying to find the right size bolt for customers. We cannot match the bolt to your finger size. Telling us the size of the wrench you used will not help. If you can walk into the store with a bolt we will measure it for you. Otherwise, you can use a bolt gage. Here is a link to a bolt gage: http://www.barnhillbolt.com/index.php?level=product&catid=-1&root=selection&group=&menu=1321&custid=611926412
