This is an antique set of Payson double wheel heavy duty industrial steel casters. Their double wheel differential action allows one wheel to rotate forward while the other rotates backward, making it significantly easier to turn and swivel heavier loads. I recently removed them from an oversized early 20th century bookcase that I sold without the attached casters. They have surface rust but were working great on the bookcase and could be used on any large project. Screws included. Base measure 3”W x 2”W. Casters are 2 3/4”H.
