The 2H Gama Cast is one of the best shoulder strength builders ever used in fitness. This exercise will not only build solid, well defined shoulders but also develops and strengthens problematic Rotator Cuff muscles. Rotator Cuff or SITS muscles are the subscapularis, infraspinatus, teres minor, and supraspinatus. This exercise is to be done slowly and robotically to reap it’s benefits. It’s also a perfect match for athletes or trainees who use maces and want to build up to bigger weights for their 360s and 10-2s. Be sure to train both sides.