Whip-finisher + half-finisher in one tool.
The TMC Dual finisher is an innovative fly tying tool which can be used as whip-finisher and half-hitch.
The standard size:
The half hitch hole works up to eye of the TMC100 size 8.
The midge size:
The inner diameter of the half hitch end is 17mm (0.67") and works on size 12 and smaller fly hooks.
Warning: The tip of the finisher is extremely sharp!