The CanDo® ErgoGrip Hand Exerciser is the classic way of strengthening hand grip and dexterity with more comfortable ergonomic handles for a better squeezing experience. The new CanDo® resistance sequence on these ergonomic grips covers any needs from the earliest stages of rehabilitation after stroke (yellow) to advanced athletic training (black). The force equivalent doubles with each level so you can progressively work your way up. CanDo® ErgoGrip Hand Exerciseris sold in pairs. Weight equals the amount of force needed to fully compress the fixed ErgoGrip handles.