Description:Adjustable Resistance Range 11 to 88 Lbs (5-40 Kg)Ergonomic design to fit small through large hand sizesApplicable the office crowd and sports enthusiastsHigh quality steel， not rustingHand Gripper is a Popular Choice for Rehabilitation. People With Arthritis， Rheumatoid Arthritis， Tendonitis， Carpal Tunnel， Tennis Elbow and Those Recovering From a Broken Wrist and Tendon Surgerycolor:black