This is a Chess piece called "Pawn." It is the basic member of the chess set. The files are set up for PLA printing on a 3-D printer. Simply open your printing application such as Cura or Makerbot and open the file named Pawn 1.stl.
If you want to modify the artwork you can open the file called Pawn 1.mix in the Autodesk Meshmixer.