RE: Anyone know what these are for?
Having not kept up with all the target equipment of late I'd have to take an educated guess on those skinny carbons. One indication also is that they are made in Korea. Therefore I'm going to say that they are possibly shafts used by the Korean Olympic team to compete and often beat a lot of the shooters from the good ole USA. How close am I?
And for info I also use the Pro 22's. Just removed my GT pin nocks and got the 2115 bushings for them. Have yet to install them as I've been working with some Ultralite 500's while waiting for my new rest.