3 3/4 dia. A great reel for up to #10 line left hand wind Reel is like new never had a line on it Reel was designed by John Emery a well known Flordia Tarpon & Bonefish Guide he has since passed away It is all cnc machined from solid alum bar stock & stainless steel ITs built to last forever The brake is much like the Fin Nor & Seamaster reels a cork disk is drawn against the spool With 2 thrust ball bearings John went aStep better and added a palming rim to the spool this lets you add a little more drag & feel the the fish Reel comes apart easy for cleaning The seller received the reel as a gift about 10 years ago and never used it Here is a nice piece of American reel making to use or collect