I had my friend go and pick me up syringes the other day. He got me three different sizes. I told him to get me 3cc 1.5inch pin. I ended up getting 3cc 25g 1inch pin, and 3cc 21g 1inch pin, and 3cc 25g 5/8inch pin. Now i know i can use the 5/8 inch pin for my biceps but what about the other ones? Plus can i load up the 5/8 inch pin with 2cc of test/eq and put in one arm then pull out clean with rubbing alcohol and then put in the other bicep?