Our Gel Balls are colour coded to provide variable resistance training for hands, fingers and forearms. The balls are pleasant to touch and return back to their original shape after each squeeze. Perfect for use in the clinic or at home. There are 5 strengths to choose from: Pink - Extra Strong; Blue - Soft; Green - Medium; Orange - Firm; Black - Extra Firm. each 50mm (2") Barcode: 5050996024837