We can train TRX forearm exercises in four movements of the wrist: flexion, extension, radial deviation, ulnar deviation, and two rotational movements of the forearm.
TRX fingers curl improves grip strength
Globe gripz are also similar to fat gripz except with the shape of the globe, and they add different variations to TRX forearm exercises.
TRX Wrist Roller is a hybrid exercises with TRX and weights