Epic Ed
Still acting 1/2 my age
21g x 1-1/2" pins r the best for all shots IMO . . .
Uhhh...WUT?! No, not really. I doubt you'll find a single person on here who agrees with that assessment. 23ga or 25ga pins are pretty standard. 1" or 1.5" depending on how deep you need to inject, which will be dependent on the muscle you're injecting.