I thought these would be standard earring backs for fish hook type earrings, since I have a number of pairs where I lost the backs.  Unfortunately they are so tiny you can barely hold them, and the holes in them are so teeny you can't stick the earring hooks through them so they are useless to me.  I'm not returning them because they were only $2.35 so it's not worth the trouble but I'm not very happy that I paid that for something that isn't really useable.