The Cando® flexible hand bar exerciser is a lightweight, portable exerciser designed to strengthen muscles in the hand, wrist and shoulder. Also promotes coordination and increases range-of-motion. Perform oscillation movements for neuromuscular and balance training. Use for soft tissue and joint mobilization. The rubber bar utilizes the same graduated progressive color code as other Cando® products (tan, yellow, red, green, blue, and black). Consistent bar diameter and length throughout resistances means you use the same muscles with each resistance.