u/BrutusBear8

Good afternoon, this 100% my ignorance of buying glass in general. But looking at the Frantz website shows what looks like a bulb instead of rods. Is that a demonstration of what the glass will look like once worked or am I looking at the wrong thing? I don't want to accidentally buy the wrong glass. For reference I'm looking at the 104 glass rods.

Thank you in advance for yalls help.