2 7/8” Dia. Spool opening 3/4 “ wide. This is a great reel for up to a # 7 line. The reel is in excllent condition And shows very little use. no dings or schrat. The rims are nickle silver. side plates are hard anodized alum. The drag system has 5 seting and is very smooth from the lightest to the heavy setting Ted spent a lot of time on little details like the oil cap with his name on it This is one fine piece of fly reel engineering. to use & collect Reel Is Left Hand Wind