Single cylinder 4 feeds machine for the production of socks and pantyhose with reciprocated heel and toe on 1 feed. 2 electronic selection units on each feed (tucking and clearing position), selector overturn by means of traditional extraction. electronic selection pattern on 2 or 4 feeds, reciprocated heel and toe option in variable size and in any area. Single or double dial jacks. Electronic device to maintain the size at any temperature of the machine.