OK
For one stop typing in caps. OK with that said; test base powders is test without an ester... sustenon is a type of steroid with 4 blends of different esters. What the esters do is (without going into detail here) basically control or determine the length of the time of the drug that is released into the blood stream, ie Test Prop. will be intrduced very quickly, while an ester like decanoate can take up to three weeks to really begin it's work.