3 1/2” Dia. X 1 1/8 “ wide inside spool. This reel will hold a lot of line It is right hand crank This is one well built reel the result of a very experienced salt water fly fisherman. and reel builder working together. Everthing is well thought out from the super smooth adjustable drag To the handle shape you hold when fightng a 78 Lb. tarpon. And a palming rim on the spool to let you apply a little more brake The Titanium reel foot fits most rods real good The reel is part of a matched set one is 3 ½ “Dia. One is 4 1/8” Dia. both are # 17 of 250. They have never had a line on them They each have there own hard leather case. the seller will consider breaking up the set