Red Bar takes 10lbs of force to bend to a ''U'' shape.
Green Bar takes 15 lbs of force.
Blue Bar takes 25 lbs of force.
Thera-Band Flex Bar with a ridged surface is used for wrist, forearm, and hand rehabilitation, upper extremity stabilization, neuro-muscular re-education, massage therapy, martial arts, and sports grip strengthening. The Flex-Bar is 12'' long and made of dry natural rubber and is available in 3 levels of resistance.