i got three sets of files from my grand father,,he rewound generators and other electrical windings which is un heard of today,,he taught me to repair harley starters and car generators later alternators...he also used the same small files in his gun work,,, some of them are like a tooth pick..i dont know what the different sets are called but maybe,ll take some pictures of the packaging,,i used one on a nipple and a touch hole,,what i have been after for a while now is a screw plate to repair and make period correct screws,,unless someone has an answer for that..the jewlery threads are off and every tap i find is either the right thread but wrong diameter