Don't buy.
I got burnt.  These are not the high quality plugs in the photo.  They are super light weight.  I doubt they're even stainless steel.  These are $4 plugs...  The "crushed glass" is nothing more than a glitter decal with a tiny amount of resin coating it.  I dont know what these other reviewers are talking about.  I feel very very very lied to and ripped off.  This is not okay.
Rating: 1 stars