Polar Metals

The Knucklebone Dexterity Toy is manipulated with the fingers of one or both hands to perform tricks and patterns, or to simply to pass the time. The dumbbell shape is particularly designed for smoother flow and better trick potential. It slides perfectly between your fingers with perfect balance and minimal effort. The momentum does the work, and helps you train your finger dexterity passively, reduces anxiety and keeps your mind focused.