needle types for injections

Hey,
I have done a couple cycles, as well as GH;
so I have a mix of pins - was just wondering if the insulin GH needles would be ok to use with oils somewherre like shoulder or rear delt?
Or does it need to be the bigger ones used in glutes?

also any benefit of glute vs shoulder?

Thanks!

yes insulin pins are more then fine, especially for the shoulders. best way to pin oils.

backload them and then pin with the small insulin needle.

Glute vs shoulder: glute can take more cc's and scar tissue is less visible. otherwise for small injections shoulders are more then fine

thank you!