The reason for this post is I bought some nocks from one of the largest sporting goods retailers going. the nocks came in a package with there logo, took them home put them on some arrows, the nocks must have been old or something because when I released the nocks broke, basically dryfiring the bows, yes both of them the limbs blew up on the one bow, the other bow developed a crack from the handle up and down the back of the bow, cut all them nocks off bought some more from another company, took the nocks back along with my bows and showed them what happened, they took pictures of the bows, well I heard back today and this is what they would do sell me one of these at a discount, I told them to take these nocks off the shelf before someone was hurt, I just don,t think I want to give them a any more money, I,m already out my 2 bows.