Yes, insulin needle. The dosages are in mcg.
Hex is Hexarelin a GHRH. Most potent out of the GH peptides but also has desensitizing effects.
Best combo is GRF 1-29 and GHRP-6 or GHRP-2. GHRP-6 brings more hunger on. But 100mcg of each morning, post workout and very important pre bed will produce the GH pulse desired.