I used a 23 guage 1"long. I shot 2ccs in my left of prop and fina. I just looked for a clear spot, that didnt look like it had any veins. Then swab it, and stuck it right in, i didnt stick the needle all the full 1". But it really doesnt hurt. You cant tell i even shot there, just the needle hole. Man you can do it, just dont think about it. Good luck