Made of a flexible translucent white plastic, this Stopper or Plug is designed to flush fit into round openings.  It is very slightly tapered for a snug fit, measuring 9/16 inch in diameter  (14.3mm) at the top, 17/32 inch (13.49mm) at the bottom and 7/16 inch (11.11mm) height. There is a lip at the top (see image) that measures 3/4 inch (19mm). These are suitable for a variety of applications such as salt and pepper shakers, flat panels, plugging pipe ends and similar uses. Please Note: Measure the opening of your object carefully to make sure the plug will fit snug. A slight difference from the opening measurement shown above can be the difference between a snug or a loose fit.