Allen key size for Solid Diff

[YJJPWrangler]

Dumb question, but can't find the answer. Need to fill both diffs on the Willys and don't know the size of the Allen key for the Solid Diff covers I have. D44s if it matters.

Thanks,

 

[Chris_Keziah]

Pretty sure it's 3/8"

 

[Jeff B]

you could measure it. I am pretty sure it's 3/8's as said.

 

[Jason W.]

Yep, 3/8