I'm stuck at 19 inches. I'm plateued and I need help. I'm missing somthing and I don't know what. What would your big three exercises for arm mass be and what would your rep/sets be in the range of? For Triceps I'm going to run Close Grip Bench followed by heavy skullcrushers then Pushdowns but not sure what to do for Biceps other than my normal heavy one arm dumbells and Barbell curls. What else would be a good bicep blaster that would force alot of blood into the muscle and still be considered a mass exercise?