I get tired of fiber glass fish arrows that are not strait an don,t spin well. so I built these out of 2315 .001 super slams with the uni -nock stuffed with a fiber glass fish arrow that,s a snug fit,AMS safety slide, that spin great. next I will paper tune them with the string attached to get them to fly the best I can an be ready. i like the best accurcy I can get no matter what I shoot. Also made a hybrid 20 strand flemish string for this 62 inch samic sage out 50-50 mix of 452 , fury only pulls 35 lb. so using up some material I have left . sure is nice to make flemish strings for any bow an string length . if you bowfish these are fine arrows that fly great an easy to make.