When the V-thread was invented it was considered by all to be a major improvement over its predecessor, the I-thread, bane of many an unwary climber.
Yet the masses were restless. How to thread that pesky rope through the hole? Sharp wire thingy to the the rescue! There are a number of these on the market, however this particular model is not quite enough gun.
The problem is the hook itself is shallow and, in my experience, prone to straightening if you pull on the rope too hard. Which you’re not supposed to do. But you will. Just be careful, ’cause you don’t want to be stuck in the dark 1,000 feet up some gnarly icicle with no way to get down except by using a $50 ice screw every pitch.
Hey, how about that; I avoided any Russion prostitute jokes!