Metron Therapeutic Putty works to strengthen your hands and can help prevent future hand and wrist problems. It is also perfect for hand grip exercises, stress relief exercises, wrist exercises, and upper arm exercises. It is superior to squeezy balls, hand weights, hand springs, or any other exercise/stress relief product. Available in a range of colour coded putty offering a complete range of resistance levels required for hand exercise programmes. Three pot sizes are available – 85gm, 454gm or 2.3kg. There are five different resistances ranging from extra soft to extra firm. You can also mix the different putty together to make a wider variety of resistances.