Make sure this fits by entering your model number. STRENGTHEN YOUR HANDS - Squeeze, pinch, stretch or twist CanDo TheraPutty hand exercise material to strengthen hand muscles, improve fine motor skills, and decrease stress. Use to practice flexion, extension, press, pinch, and adduction exercises. GREAT FOR EVERYONE - People of all ages can benefit from using TheraPutty. Children can use it to develop fine motors skills, or use it for play time. Adults can use it for hand rehabilitation, general hand strengthening, and stress relief.