eyebrow jewelry

[Blue-eyed wonder]

So I've been browsing around, on a search for a sweet piece of jewelry for my eyebrow piercing. However, I haven't the /slightest/ clue as to what length I would need.

What's the length of curved barbell used for an average eyebrow piercing?

 

[Veya Starr Davis]

i wear 5/16 in mine but thats cuz they have grown out some.
but 3/8 is the standard size for them. and what i wore when i first got them.