Earnest, the "o" system of sizing reels is much older than Penn. There were also some sizes that Penn never made. Zane Grey had a custom maker in Chicago build him a 20/0 reel back in the 1920s. Big Lou just bought a Everol(sp) 18/0 reel that is only one of 5 in the US.Ernest said:It is the sizing of various Penn Senator reels without having to go thru the actual model numbers. The system was based originally, as I understand it, on hook sizes. 4/0 is a Penn 113. 6/0 is a Penn 114. 3/0 is a Penn 112. After that, I forget the model numbers of the Penn gear.
Yep, the bigger the number in front of the "0", the bigger the reel.Vinny said:Is it such that the bigger the number, the bigger the reel? Also, I have a couple of Penn 309's - I get the impression that they are not part of the "0" designation system. Is a 309 considered to be any good for sharks?