What size pin do u go with for fina?

[Stiffler]

I use a 22ga 1.5 in the ass for fina, but was thinking about trying a thinner pin maybe a slin.

 

[IronFist]

I use a 23g 1" for ALL of my injections. There might not be much of a difference between 22 and 23, but I don't want anymore scar tissue than necessary.