A buddy of mine recently stopped his habits because his girl found out. so he gave me his pinz and told her he flushed his stash though I am holding it for him for the time being. anyway he gave me about 40 half inch 25 guage pinz he said he uses for delts, pecs and tris. I am wondering if this is good practice, you know since I have them I would like to use them, but is 1/2 inch long enough even for these spot injections? I have always been told use 1 inch at least for spot injections and 1 1/2 for gluts and thighs but I would like some of your oppinions b4 I go using these tiny little things. Thanks in advance!