They've been out for a while; I've used them a couple of years now and they work great. I use two at a time, one empty and one holding my arrow that has the expandable head for any turkey that walks by while I'm in the deer stand. Makes for a very quick arrow change, and has helped me get a couple gobblers from the stand during the fall. It is especially helpful because I also use the Simmons Bushmaster quiver instead of a conventional bow mounted quiver.