are Wolowitz's BELT buckles.
The Big Bang Theory Season 12, Episode 24
That's a lot of BELT buckles.
The Big Bang Theory Season 5, Episode 21
I haven't fastened my seat BELT yet.
The Big Bang Theory Season 2, Episode 5
It's a light saber
BELT buckle.
The Big Bang Theory Season 12, Episode 24
Remember that little object
I spotted beyond the Kuiper BELT?
The Big Bang Theory Season 2, Episode 4