This Hex Nut driver is a high quality Japan made 1/4" hex nut driver. It has 3/8" O.D. small head that will be able to fit into Avet reel knob and U.J. knob cup.
This Hex Nut Driver will open new designed Avet reel handle knob on SX, MXJ, MX, JX, LX, HXJ, HX, HXW single or two speed reels.
Before you purchase this item, please consult with your local tackle shop which maintains your reels or manufacture for more information about your Avet reel handle knob.