The Finger Master
Revolutionary 5 finger pistons with key lock feature to ensure all hand sizes are catered for
Adjustable tension (3 to 8.5 lbs of tension) means you don’t need to buy devices as your grip strength improves
Fits in your pocket so you can use it anytime and anywhere (e.g. in the office, on the bus)
Soft malleable rubber for supreme comfort and quality copper core (not cheap steel) for maximum durability
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