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♬The new 5-finger button design gives you more practice and a richer fingertip span practice.
♬Soft button cap makes it comfortable to press.The slim size makes you hold it all in one palm.
♬Made of pure copper core, adjustable in strength, suitable for users of all ages.
♬With 2 buckles, any two of the buttons can be held down. You can choose whatever fingers you want to exercise at your will.
♬The base and top buttons are made of eco-friendly silicone with non-slip design
Made of ABS plastic, copper and silicone. Each additional one scale, the pressure increases pound. The finger exerciser has a minimum pressure of 3 pound and a maximum of 8.5 pounds. Just one can meet your multiple needs, no longer need to spend more money. The 5-finger exerciser can help improve the strength and agility of hands and fingers, and is ideal for musicians. It also helps arthritis, carpal tunnel, neuropathy and poor blood circulation. Specifications: Number of adjustable key pads: 5 Dimensions: 105 x 66 x 23 mm (4.13 x 2.60 x 0.91 inches) Net weight: 3.8oz/108g Tension range: 3Lb-8.5Lb,Rotate clockwise to increase strength,counterclockwise rotation reduces strength