DILIMI Finger Strengthener Guitar Beginner Exercier Finger Trainer Hand Grip Strength Trainer for Athletes Musicians and Physical Therapy

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