The new stand up design is a functional feature that adds a unique flair to the design. These patented bottle stoppers are machined to perfection in the USA on modern machinery in a shop that pays attention to every detail. They are machined out of a single piece of stainless steel. The 3/8" x 16 tpi threaded stud measures 1/2" tall. The stoppers measure 13/16" diameter by 2" tall including the threaded stud.