1) With this ring item 
Wedding Band is an American comedy drama series starring Brian Austin Green, Harold Perrineau, Peter Cambor and Derek Miller. The series ran on TBS from November 10, 2012 to January 19, 2013 at 10 pm EST. It was created by Darin Moiselle and Josh Lobis. On January 22, 2013, TBS officially cancelled the series after one season due to low ratings. =...
A ring-shaped transition between the octagon and round sections of a gun barrel.