I wouldn't have ever ordered any aluminum arrows but in the corner of my gun cabinet there is a bucket of old, bent, broken, or just no longer used arrows. I managed to dig these out of that. Now that I have I wouldn't care to order more! My buddy was about to order some 400 spine carbons, I went in the bucket and found six 2117's which are 400 spine. They are not a matching set but I told him to give them a try first, I fletched a few for him yesterday.