All sizes have an approximate 5/16" wearable area and have hollow backs.
Date posted: 1/9/2013
They screw on perfectly and are definitely ones to start conversations with.
Date posted: 7/31/2012
Great glossy, clear logo, easy to put in- love these!
Date posted: 6/28/2012
These are adorable! The wearable is a really nice length!