MASS–TECH supplies the macronutrients and musclebuilding ingredients you need to help you gain mass, muscle size and strength! MASS–TECH EXTREME 2000 features 80g of protein, over 400g of carbs and 2,270 mass-producing calories, plus 8.2g of L-leucine(when mixed with 20 oz. of skim milk), 10g of creatine, and 20 vitamins and minerals!