Albio Flexbar Resistance Bar is used for grip strengthening of wrist, arm and shoulder. This treatment is specially useful for people suffering from Tennis Elbow or Golfer’s elbow. Like other Albio products, Albio flexbar also uses progressive resistance levels to provide an effective exercise regime to increase your strength. Color coding is yellow, red, green & blue. 12” long & 1.5” diameter Albio Flexbar Green provides 15lbs resistance and is level 3 in progressive strength levels.