MultiwrenchOne of the most versatile grip tools, this innovative take on the classic wrist wrench adds on a parallel bar (rotates along the axis of the main barrel) to provide you with multiple ways to work your grip. Some examples include: Traditional wrist wrench style (works your wrist, easy) Thumb on bar, with strap over top of bar (works your thumb, moderate) Thumb on bar, with strap not over top of bar (works your fingers and thumb, very difficult) Fingers