Improve grip strength and rehabilitate common injuries such as tendonitis (i.e. tennis elbow or golfer's elbow). Non-returnable. Thera-Band® FlexBars™ are perfect for upper extremity stabilization, neuromuscular re-education, soft tissue and joint mobilization and oscillation. Its unique design allows for bending and twisting movements with one piece of equipment. Includes instructional manual. Used in the "Tyler Twist" technique for tennis elbow treatment. Available in four resistances; sold each. Resistance listed is the force required to bend the FlexBar into a "U" shape.