The purpose for which it was used is unknown. A wooden stick is inserted, and remnants of it remain. It gave me the impression of Devil's Tower from Close Encounters of the Third Kind. There is rust overall, but it's not something that looks dirty from being exposed to wind and rain. Please be aware that wood shavings may fall off. Height: Approximately 9cm Sizes are approximate. The actual item may differ slightly in color from the images. It is an old item, so there are scratches, stains, and chips commensurate with its age.