Abstract: An improved feeding device for infants comprises a sharply pointed, tapered hollow stem of plastic or similar rigid material, to which a flexible nipple is attached at the broad, bored end. The shaft of the tapered stem has at its periphery an integrally molded fastening device, such as screw threads, expansion members or bayonet-type locking grooves. The stem's pointed end is used to perforate the wall of a prefilled, sealed container. Further insertion causes the fastening device to firmly attach the stem to the container wall, the nipple then being ready for use.