Standard issue in every home till at least the 1950s, these sets of darning and mending cotton in "standard shades" are still good for any fine work you need to do: silks, organdie, chiffon, lawn, underwear, that sort of thing. There are ten 25-yard balls of thread per box, all 1 end of 2 ply --ie, thin. Please note, these are AS IS, meaning they are in various states of having been used in the 1940s and beyond (which is charming and haunting if you ask me), but all are verging on complete. The cellophane in the box top is usually missing.