3 1/4 "diameter spool width inside .550.  Will hold up to a #7 line.  Reel is in excellent condition in original leather bag.  Out side rim has a few small nicks and scratches from normal use, you will have to look hard to find them.  Reel is from original owner.  He purchased them from Stanley Bogdan over Twenty years ago.  Age is forceing him to trim down his fly fishing equipment.