I've been doing professional upholstery work for four years. I used these pig rings for a simple chair upholstery project and half of them broke trying to put them on. You can tell from the packaging that they were thin, especially compared to the ones I replaced. The "value" of this valuable pack is made up for by how much you break trying to use it, so just spend your money elsewhere on better packs. 2 stars because in the end it did the job but not sure how long they will last and very disappointed with how much I had to throw away.