Product information "ORTEGA Fingertrainer - Four Pistons Adjustable Tension (FEX4)"
The original Ortega Guitars FEX4 is an advanced pocked-sized, lightweight training tools for different needs. The FEX4 help you to build up strength for the entire hand and forearm. Adjustable tension for each finger with 3–7 lbs (appx. 1.3–3.2 kg) & 4individual tension adjustable pistons for more training possibilities. Train and maintain strength for your fingers, palm and forearms, supports reaction speed, flexibility and other high difficult action training.
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