Daddario Varigrip

Finger Trainer
Designed to train and expand the strength and stamina of the individual fingers and the entire hand
The Varigrips ergonomic design and variable tension provides customised conditioning for individual fingers, the entire hand, wrist, and forearm.
Resistance is continuously adjustable on a knurled nut for each individual finger
Training level individually selectable
Combines three Gripmaster into a universal training device
Can also be used as a trainer for the fingertips when the rubberised handle is removed, and the device is rotated by 180 degrees
The reversible moulded grip uncovers simulated strings to help develop and maintain finger callus when you are away from your instrument.
Individually adjustable resistance for each finger by a knurled nut