So, its the same as a Quad or Gluteinjection - inject down into the Delt at an angle of about 45 Degrees. Top, middle, or bottom of delt? I have the 1' Needle already as got a box of a friend.
There simple bro...I have never hit a vein yet there either. Get a 1 inch go about half way in, push.....Childs play. Do one shot and you will always want to use them..