Function and fit was good, but that does me no good if they dont light. Hunt on Hunters and rest easy buying whatever the hell you call this no name brand. They work great and they are a good deal. Function and fit was good, but that does me no good if they dont light. This is a testament to how tough these nocks truly are. These work well for me and do not change my arrow flight. If you cant take returns then you shouldnt be selling them.