I score mine at my local HEB. Keep in mind I dont wear tight clothes or muscle shirts while going to the HEB pharmacy. You want to ask for either 23gauge 1 1/2inch pin with 3ml barrel or 21 gauge 1 inch pin and 3ml...which are used for intramusculartory injections. Its very easy for me to score them, hence they are very cheap. Try to save one needle (pin) for loading then swap the new needle out for injection. This will keep your needle clean and sharpe. Hope this serves as some assistance for ya.
dRu
Bro I enjoy buying them at the artsy fartsy pharmacy down the street. I have never had anyone rush around so quickly for me. They know what there for, but they always ask.
i think you can get insulin pins almost anywhere now without a script. intermuscular is an injection into the muscle. intraveinous is into a blood vein. subcutanious is like under the skin like insulin shots.