A good quality dubbing needle/half hitch tool for fly tying.
 
Approximately 12.5cm in length with a brass hexagonal handle to prevent it rolling off your fly tying bench and onto the floor.
 
A dubbing needle has a multitude of uses such as applying head varnish, clearing varnish out of eyes, picking out fur after dubbing, etc.  The handle also double as a half hitch tool to allow you to easily place any hitches on the fly.
 
The dubbing needle comes complete with a silicon sheath to cover the needle when not in use.