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The hand exerciser gel ball provides variable resistance training for hands,Website:http://www.liangdiantoys.com, fingers and forearms. The therapy ball is pleasant to touch and returns back to original shape after each squeeze. The gel hand exercisers are perfect for use in clinics or at home. The hand exerciser balls are available in 3 variations of resistance: X-Soft; Soft; Medium; Each therapy ball is colour coded to indicate resistance.These hand strengthener grips make great gifts as st