Vintage Green STERI-LITE Salt & Pepper Shakers are square in shape, made of plastic, and manufactured by United Plastic Co. in Fitchburg, Massachusetts. These mid-century modern shakers from the 1950s have a unique design with removable tops for easy refilling. This set includes both a pepper shaker and a salt shaker, each measuring 2.5" in height with a 1.5" square base. A true vintage piece from the United States.