They are functional, I'll leave it at that. They are too heavy and big, when you clip mains unless you have enough tension they start to sag and pull the strings. I have to string other tensions aside from high ones so it makes it difficult. Aside from that the teeth are too close together to do crosses. I have to tension it weirdly because it pulls the strings in every which direction and it loses tension. In order to use it, you have to work your way around it rather than it working around for you.