Grip Strengtheners & Resistance Bands Tunturi

How can you train muscle groups that are normally difficult to train? The muscles of your fingers, wrist and lower arm get a good workout with this Tunturi Magic Ball.Ideal if you are suffering from RSI or a mouse arm.The benefits of the Tunturi Magic Ball.- Hand trainer modeled to NASA.- Generates forces up to 18 kg.- Training for mouse arm or RSI.Without batteries.The Magic Ball gets its efficiency from the centrifugal force.That force is variable and automatically adjusts to your level of training.The core of the Magic Ball moves through rotation, for example the wrist.That rotation creates strength and you can feel that in your fingers, wrist and lower arm.Even your biceps, triceps and shoulders …