This threader is second to none – at least in this price range. It is really well made: the wire is strong, but flexible and has a tight fit within the handle. The handle itself is made out of brass and feels well balanced in the hand.
What do you need a threader for? Well, first of all it is quite handy when threading bobbins. It is also good for threading tippet material through hook eyes and you can also tie knots easier, e. g. the nail knot.
Did you know that a threader is also a great tool for removing ticks (nasty little buggers)?